Finding the Fourth Proportional to 9,568.57, 13,217.27 and 7,980.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,568.57 : 13,217.27 = 7,980.42 : x
2. Step 2: Convert to fraction form
   9,568.57/13,217.27 = 7,980.42/x
3. Step 3: Cross multiply
   9,568.57x = 13,217.27 × 7,980.42
4. Step 4: Simplify right side
   9,568.57x = 105,479,365.85
5. Step 5: Solve for x
   x = 105,479,365.85/9,568.57
6. Step 6: Final answer
   x = 11,023.52