Finding the Fourth Proportional to 22,589.91, 31,171.12 and 12,517.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,589.91 : 31,171.12 = 12,517.86 : x
2. Step 2: Convert to fraction form
   22,589.91/31,171.12 = 12,517.86/x
3. Step 3: Cross multiply
   22,589.91x = 31,171.12 × 12,517.86
4. Step 4: Simplify right side
   22,589.91x = 390,195,716.20
5. Step 5: Solve for x
   x = 390,195,716.20/22,589.91
6. Step 6: Final answer
   x = 17,273.01