Finding the Fourth Proportional to 9,107.72, 12,568.96 and 5,331.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,107.72 : 12,568.96 = 5,331.23 : x
2. Step 2: Convert to fraction form
   9,107.72/12,568.96 = 5,331.23/x
3. Step 3: Cross multiply
   9,107.72x = 12,568.96 × 5,331.23
4. Step 4: Simplify right side
   9,107.72x = 67,008,016.62
5. Step 5: Solve for x
   x = 67,008,016.62/9,107.72
6. Step 6: Final answer
   x = 7,357.28