Finding the Fourth Proportional to 8,922.28, 12,311.72 and 4,942.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,922.28 : 12,311.72 = 4,942.38 : x
2. Step 2: Convert to fraction form
   8,922.28/12,311.72 = 4,942.38/x
3. Step 3: Cross multiply
   8,922.28x = 12,311.72 × 4,942.38
4. Step 4: Simplify right side
   8,922.28x = 60,849,198.69
5. Step 5: Solve for x
   x = 60,849,198.69/8,922.28
6. Step 6: Final answer
   x = 6,819.92