Finding the Fourth Proportional to 22,792.37, 31,450.65 and 12,721.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,792.37 : 31,450.65 = 12,721.37 : x
2. Step 2: Convert to fraction form
   22,792.37/31,450.65 = 12,721.37/x
3. Step 3: Cross multiply
   22,792.37x = 31,450.65 × 12,721.37
4. Step 4: Simplify right side
   22,792.37x = 400,095,355.39
5. Step 5: Solve for x
   x = 400,095,355.39/22,792.37
6. Step 6: Final answer
   x = 17,553.92