Finding the Fourth Proportional to 22,561.38, 31,134.26 and 12,489.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,561.38 : 31,134.26 = 12,489.82 : x
2. Step 2: Convert to fraction form
   22,561.38/31,134.26 = 12,489.82/x
3. Step 3: Cross multiply
   22,561.38x = 31,134.26 × 12,489.82
4. Step 4: Simplify right side
   22,561.38x = 388,861,303.23
5. Step 5: Solve for x
   x = 388,861,303.23/22,561.38
6. Step 6: Final answer
   x = 17,235.71