Finding the Fourth Proportional to 8,128.62, 12,182.00 and 4,425.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.62 : 12,182.00 = 4,425.30 : x
2. Step 2: Convert to fraction form
   8,128.62/12,182.00 = 4,425.30/x
3. Step 3: Cross multiply
   8,128.62x = 12,182.00 × 4,425.30
4. Step 4: Simplify right side
   8,128.62x = 53,908,982.47
5. Step 5: Solve for x
   x = 53,908,982.47/8,128.62
6. Step 6: Final answer
   x = 6,632.00