Finding the Fourth Proportional to 9,760.50, 13,471.92 and 5,571.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,760.50 : 13,471.92 = 5,571.18 : x
2. Step 2: Convert to fraction form
   9,760.50/13,471.92 = 5,571.18/x
3. Step 3: Cross multiply
   9,760.50x = 13,471.92 × 5,571.18
4. Step 4: Simplify right side
   9,760.50x = 75,054,491.27
5. Step 5: Solve for x
   x = 75,054,491.27/9,760.50
6. Step 6: Final answer
   x = 7,689.62