Finding the Fourth Proportional to 8,440.04, 12,658.72 and 5,310.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,440.04 : 12,658.72 = 5,310.46 : x
2. Step 2: Convert to fraction form
   8,440.04/12,658.72 = 5,310.46/x
3. Step 3: Cross multiply
   8,440.04x = 12,658.72 × 5,310.46
4. Step 4: Simplify right side
   8,440.04x = 67,223,626.21
5. Step 5: Solve for x
   x = 67,223,626.21/8,440.04
6. Step 6: Final answer
   x = 7,964.85