Finding the Fourth Proportional to 22,864.31, 31,553.97 and 12,792.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,864.31 : 31,553.97 = 12,792.15 : x
2. Step 2: Convert to fraction form
   22,864.31/31,553.97 = 12,792.15/x
3. Step 3: Cross multiply
   22,864.31x = 31,553.97 × 12,792.15
4. Step 4: Simplify right side
   22,864.31x = 403,643,117.34
5. Step 5: Solve for x
   x = 403,643,117.34/22,864.31
6. Step 6: Final answer
   x = 17,653.85