Finding the Fourth Proportional to 5,680.80, 8,475.57 and 5,057.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,680.80 : 8,475.57 = 5,057.10 : x
2. Step 2: Convert to fraction form
   5,680.80/8,475.57 = 5,057.10/x
3. Step 3: Cross multiply
   5,680.80x = 8,475.57 × 5,057.10
4. Step 4: Simplify right side
   5,680.80x = 42,861,805.05
5. Step 5: Solve for x
   x = 42,861,805.05/5,680.80
6. Step 6: Final answer
   x = 7,545.03