Finding the Fourth Proportional to 22,517.20, 31,073.32 and 12,446

Step by Step Solution

1. Step 1: Write the proportion equation
   22,517.20 : 31,073.32 = 12,446 : x
2. Step 2: Convert to fraction form
   22,517.20/31,073.32 = 12,446/x
3. Step 3: Cross multiply
   22,517.20x = 31,073.32 × 12,446
4. Step 4: Simplify right side
   22,517.20x = 386,738,540.72
5. Step 5: Solve for x
   x = 386,738,540.72/22,517.20
6. Step 6: Final answer
   x = 17,175.25