Finding the Fourth Proportional to 8,911.92, 12,298.20 and 4,932.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,911.92 : 12,298.20 = 4,932.90 : x
2. Step 2: Convert to fraction form
   8,911.92/12,298.20 = 4,932.90/x
3. Step 3: Cross multiply
   8,911.92x = 12,298.20 × 4,932.90
4. Step 4: Simplify right side
   8,911.92x = 60,665,790.78
5. Step 5: Solve for x
   x = 60,665,790.78/8,911.92
6. Step 6: Final answer
   x = 6,807.26