Create a chart to show Jan - December and selected month

Hi  Rajsheisan ,You can refer the following links to get the culmulative values base on the selected months...

Cumulative total based on the selected month

First of all, we can create a spreated calculated table as the slicer, 

SlicerTable = DISTINCT('Table'[Month])

Then we can use a measure in visual filter to meet your requirement:

Cumulative Size = CALCULATE(SUM('Table'[Size]), FILTER(ALLSELECTED('Table'),[Month]<=SELECTEDVALUE('Table'[Month]))) 

 

Computing running totals in DAX

RT Sales Customer Class :=
VAR CurrentCustomerClass = SELECTEDVALUE ( Customer[Customer Class Number] )
RETURN
    CALCULATE (
        [Sales Amount],
        Customer[Customer Class Number] <= CurrentCustomerClass,
        ALL ( Customer[Customer Class] )
    )

Cumulative Running Total Based on Highest Value

If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. You can refer the following link to upload the file to the community. Thank you.

How to upload PBI in Community

Best Regards