Finding the Fourth Proportional to 5,700.48, 7,861.20 and 3,708.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,700.48 : 7,861.20 = 3,708.72 : x
2. Step 2: Convert to fraction form
   5,700.48/7,861.20 = 3,708.72/x
3. Step 3: Cross multiply
   5,700.48x = 7,861.20 × 3,708.72
4. Step 4: Simplify right side
   5,700.48x = 29,154,989.66
5. Step 5: Solve for x
   x = 29,154,989.66/5,700.48
6. Step 6: Final answer
   x = 5,114.48