Pulling in Excel files in a folder, but the files' columns don't line up

Hi, 

So say if I want to point Power BI at a folder with 10 Excel files, and those files all follow the same column order - no problem. I can grab all 10 files, grab the content from them, filter out the headers, etc. 

But say those 10 Excel files have different columns.  But, in every file waht I want, is the column named <X> - is there a way to pull in all the <X> columns from these hypothetical 10 files, and mergte all those <X> columns into 1 column? 

Thanks,