Hello Swetha,
Yes, of course, removing the cssclass (from the ProductPrice data field) does indeed move the filter to the left and permit sufficient room for filter data to be entered.
However, this completely misses the point!!!
It is NORMAL practice to right align currency columns. So let us return to doing what is right.
The Price Column needs to be right aligned, but we either need to left align the filter cell or find a way of permitting a larger sized input area for the filter data.