Hi Shari C,
This may work for you, it returns the sum of the last values of column E from all the sheets to a CELL in sheet1.
On sheet 1 enter this formula in a cell.
=SUM(Sheet1:Sheet3!J1)
On each sheet enter this formula in cell J1.
=IFERROR(LOOKUP(2,1/(E1:E25000<>""),E1:E25000),0)
Change J1 to suit your needs & Sheet1:Sheet3! to match your first & last sheet.
Regards,
Howard