Finding the Fourth Proportional to 9,358.56, 12,909.12 and 5,579.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,358.56 : 12,909.12 = 5,579.24 : x
2. Step 2: Convert to fraction form
   9,358.56/12,909.12 = 5,579.24/x
3. Step 3: Cross multiply
   9,358.56x = 12,909.12 × 5,579.24
4. Step 4: Simplify right side
   9,358.56x = 72,023,078.67
5. Step 5: Solve for x
   x = 72,023,078.67/9,358.56
6. Step 6: Final answer
   x = 7,695.96