Finding the Fourth Proportional to 5,073.57, 7,610.49 and 3,680.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,073.57 : 7,610.49 = 3,680.28 : x
2. Step 2: Convert to fraction form
   5,073.57/7,610.49 = 3,680.28/x
3. Step 3: Cross multiply
   5,073.57x = 7,610.49 × 3,680.28
4. Step 4: Simplify right side
   5,073.57x = 28,008,734.14
5. Step 5: Solve for x
   x = 28,008,734.14/5,073.57
6. Step 6: Final answer
   x = 5,520.52