Finding the Fourth Proportional to 22,505.64, 31,056.71 and 12,434.17

Step by Step Solution

1. Step 1: Write the proportion equation
   22,505.64 : 31,056.71 = 12,434.17 : x
2. Step 2: Convert to fraction form
   22,505.64/31,056.71 = 12,434.17/x
3. Step 3: Cross multiply
   22,505.64x = 31,056.71 × 12,434.17
4. Step 4: Simplify right side
   22,505.64x = 386,164,271.97
5. Step 5: Solve for x
   x = 386,164,271.97/22,505.64
6. Step 6: Final answer
   x = 17,158.56