Finding the Fourth Proportional to 12,425.46, 17,147.12 and 7,123.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,425.46 : 17,147.12 = 7,123.35 : x
2. Step 2: Convert to fraction form
   12,425.46/17,147.12 = 7,123.35/x
3. Step 3: Cross multiply
   12,425.46x = 17,147.12 × 7,123.35
4. Step 4: Simplify right side
   12,425.46x = 122,144,937.25
5. Step 5: Solve for x
   x = 122,144,937.25/12,425.46
6. Step 6: Final answer
   x = 9,830.21