Finding the Fourth Proportional to 22,562.31, 31,135.59 and 12,490.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,562.31 : 31,135.59 = 12,490.53 : x
2. Step 2: Convert to fraction form
   22,562.31/31,135.59 = 12,490.53/x
3. Step 3: Cross multiply
   22,562.31x = 31,135.59 × 12,490.53
4. Step 4: Simplify right side
   22,562.31x = 388,900,020.96
5. Step 5: Solve for x
   x = 388,900,020.96/22,562.31
6. Step 6: Final answer
   x = 17,236.71