Finding the Fourth Proportional to 22,553.32, 31,123.29 and 12,481

Step by Step Solution

1. Step 1: Write the proportion equation
   22,553.32 : 31,123.29 = 12,481 : x
2. Step 2: Convert to fraction form
   22,553.32/31,123.29 = 12,481/x
3. Step 3: Cross multiply
   22,553.32x = 31,123.29 × 12,481
4. Step 4: Simplify right side
   22,553.32x = 388,449,782.49
5. Step 5: Solve for x
   x = 388,449,782.49/22,553.32
6. Step 6: Final answer
   x = 17,223.62