Finding the Fourth Proportional to 5,499.28, 7,591.68 and 3,707.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,499.28 : 7,591.68 = 3,707.20 : x
2. Step 2: Convert to fraction form
   5,499.28/7,591.68 = 3,707.20/x
3. Step 3: Cross multiply
   5,499.28x = 7,591.68 × 3,707.20
4. Step 4: Simplify right side
   5,499.28x = 28,143,876.10
5. Step 5: Solve for x
   x = 28,143,876.10/5,499.28
6. Step 6: Final answer
   x = 5,117.74