Finding the Fourth Proportional to 8,296.72, 12,442.56 and 3,909.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,296.72 : 12,442.56 = 3,909.76 : x
2. Step 2: Convert to fraction form
   8,296.72/12,442.56 = 3,909.76/x
3. Step 3: Cross multiply
   8,296.72x = 12,442.56 × 3,909.76
4. Step 4: Simplify right side
   8,296.72x = 48,647,423.39
5. Step 5: Solve for x
   x = 48,647,423.39/8,296.72
6. Step 6: Final answer
   x = 5,863.45