Finding the Fourth Proportional to 8,354.29, 12,531.40 and 3,423.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,354.29 : 12,531.40 = 3,423.94 : x
2. Step 2: Convert to fraction form
   8,354.29/12,531.40 = 3,423.94/x
3. Step 3: Cross multiply
   8,354.29x = 12,531.40 × 3,423.94
4. Step 4: Simplify right side
   8,354.29x = 42,906,761.72
5. Step 5: Solve for x
   x = 42,906,761.72/8,354.29
6. Step 6: Final answer
   x = 5,135.90