Finding the Fourth Proportional to 22,561.02, 31,133.69 and 12,488.85

Step by Step Solution

1. Step 1: Write the proportion equation
   22,561.02 : 31,133.69 = 12,488.85 : x
2. Step 2: Convert to fraction form
   22,561.02/31,133.69 = 12,488.85/x
3. Step 3: Cross multiply
   22,561.02x = 31,133.69 × 12,488.85
4. Step 4: Simplify right side
   22,561.02x = 388,823,921.91
5. Step 5: Solve for x
   x = 388,823,921.91/22,561.02
6. Step 6: Final answer
   x = 17,234.32