Finding the Fourth Proportional to 5,142.39, 7,086.03 and 3,549.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,142.39 : 7,086.03 = 3,549.52 : x
2. Step 2: Convert to fraction form
   5,142.39/7,086.03 = 3,549.52/x
3. Step 3: Cross multiply
   5,142.39x = 7,086.03 × 3,549.52
4. Step 4: Simplify right side
   5,142.39x = 25,152,020.72
5. Step 5: Solve for x
   x = 25,152,020.72/5,142.39
6. Step 6: Final answer
   x = 4,891.12