Getting Last Month End Date and Selected date

[sekinod]

If I selected 12/7/2018, Then I need to get all the months' end up to that month within that year and selected date as below,

Another example:

If Select 10/14/2018 then I need to get the following dates 

How can I achieve that. Thank you

[AntrikshSharma]

@sekinod  Since you didn't provide the data I can only create a dummy data, always make sure you provide some data and create a detailed post! You can find the file attached below my signature.