Finding the Fourth Proportional to 7,134.72, 10,685.94 and 3,439.62

Step by Step Solution

1. Step 1: Write the proportion equation
   7,134.72 : 10,685.94 = 3,439.62 : x
2. Step 2: Convert to fraction form
   7,134.72/10,685.94 = 3,439.62/x
3. Step 3: Cross multiply
   7,134.72x = 10,685.94 × 3,439.62
4. Step 4: Simplify right side
   7,134.72x = 36,755,572.94
5. Step 5: Solve for x
   x = 36,755,572.94/7,134.72
6. Step 6: Final answer
   x = 5,151.65