Finding the Fourth Proportional to 9,874.71, 14,817.92 and 3,639.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,874.71 : 14,817.92 = 3,639.10 : x
2. Step 2: Convert to fraction form
   9,874.71/14,817.92 = 3,639.10/x
3. Step 3: Cross multiply
   9,874.71x = 14,817.92 × 3,639.10
4. Step 4: Simplify right side
   9,874.71x = 53,923,892.67
5. Step 5: Solve for x
   x = 53,923,892.67/9,874.71
6. Step 6: Final answer
   x = 5,460.81