Finding the Fourth Proportional to 22,562.69, 31,135.49 and 12,490.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,562.69 : 31,135.49 = 12,490.42 : x
2. Step 2: Convert to fraction form
   22,562.69/31,135.49 = 12,490.42/x
3. Step 3: Cross multiply
   22,562.69x = 31,135.49 × 12,490.42
4. Step 4: Simplify right side
   22,562.69x = 388,895,191.33
5. Step 5: Solve for x
   x = 388,895,191.33/22,562.69
6. Step 6: Final answer
   x = 17,236.21