Finding the Fourth Proportional to 5,480.55, 7,613.85 and 5,429.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,480.55 : 7,613.85 = 5,429.31 : x
2. Step 2: Convert to fraction form
   5,480.55/7,613.85 = 5,429.31/x
3. Step 3: Cross multiply
   5,480.55x = 7,613.85 × 5,429.31
4. Step 4: Simplify right side
   5,480.55x = 41,337,951.94
5. Step 5: Solve for x
   x = 41,337,951.94/5,480.55
6. Step 6: Final answer
   x = 7,542.66