Finding the Fourth Proportional to 8,789.16, 12,132.54 and 5,765.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789.16 : 12,132.54 = 5,765.43 : x
2. Step 2: Convert to fraction form
   8,789.16/12,132.54 = 5,765.43/x
3. Step 3: Cross multiply
   8,789.16x = 12,132.54 × 5,765.43
4. Step 4: Simplify right side
   8,789.16x = 69,949,310.09
5. Step 5: Solve for x
   x = 69,949,310.09/8,789.16
6. Step 6: Final answer
   x = 7,958.59