Finding the Fourth Proportional to 7,711.12, 10,626.60 and 5,499.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,711.12 : 10,626.60 = 5,499.28 : x
2. Step 2: Convert to fraction form
   7,711.12/10,626.60 = 5,499.28/x
3. Step 3: Cross multiply
   7,711.12x = 10,626.60 × 5,499.28
4. Step 4: Simplify right side
   7,711.12x = 58,438,648.85
5. Step 5: Solve for x
   x = 58,438,648.85/7,711.12
6. Step 6: Final answer
   x = 7,578.49