Finding the Fourth Proportional to 8,922.30, 12,311.82 and 4,943.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,922.30 : 12,311.82 = 4,943.31 : x
2. Step 2: Convert to fraction form
   8,922.30/12,311.82 = 4,943.31/x
3. Step 3: Cross multiply
   8,922.30x = 12,311.82 × 4,943.31
4. Step 4: Simplify right side
   8,922.30x = 60,861,142.92
5. Step 5: Solve for x
   x = 60,861,142.92/8,922.30
6. Step 6: Final answer
   x = 6,821.24