Finding the Fourth Proportional to 22,831.56, 31,522.41 and 20,437.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,831.56 : 31,522.41 = 20,437.38 : x
2. Step 2: Convert to fraction form
   22,831.56/31,522.41 = 20,437.38/x
3. Step 3: Cross multiply
   22,831.56x = 31,522.41 × 20,437.38
4. Step 4: Simplify right side
   22,831.56x = 644,235,471.69
5. Step 5: Solve for x
   x = 644,235,471.69/22,831.56
6. Step 6: Final answer
   x = 28,216.88