Finding the Fourth Proportional to 9,545.28, 13,170.12 and 5,718.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,545.28 : 13,170.12 = 5,718.18 : x
2. Step 2: Convert to fraction form
   9,545.28/13,170.12 = 5,718.18/x
3. Step 3: Cross multiply
   9,545.28x = 13,170.12 × 5,718.18
4. Step 4: Simplify right side
   9,545.28x = 75,309,116.78
5. Step 5: Solve for x
   x = 75,309,116.78/9,545.28
6. Step 6: Final answer
   x = 7,889.67