Finding the Fourth Proportional to 22,717.31, 31,351.37 and 15,158.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,717.31 : 31,351.37 = 15,158.83 : x
2. Step 2: Convert to fraction form
   22,717.31/31,351.37 = 15,158.83/x
3. Step 3: Cross multiply
   22,717.31x = 31,351.37 × 15,158.83
4. Step 4: Simplify right side
   22,717.31x = 475,250,077.98
5. Step 5: Solve for x
   x = 475,250,077.98/22,717.31
6. Step 6: Final answer
   x = 20,920.17