Finding the Fourth Proportional to 12,425.96, 17,147.81 and 7,123.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,425.96 : 17,147.81 = 7,123.85 : x
2. Step 2: Convert to fraction form
   12,425.96/17,147.81 = 7,123.85/x
3. Step 3: Cross multiply
   12,425.96x = 17,147.81 × 7,123.85
4. Step 4: Simplify right side
   12,425.96x = 122,158,304.91
5. Step 5: Solve for x
   x = 122,158,304.91/12,425.96
6. Step 6: Final answer
   x = 9,830.90