Finding the Fourth Proportional to 12,425.45, 17,144.31 and 9,070.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,425.45 : 17,144.31 = 9,070.10 : x
2. Step 2: Convert to fraction form
   12,425.45/17,144.31 = 9,070.10/x
3. Step 3: Cross multiply
   12,425.45x = 17,144.31 × 9,070.10
4. Step 4: Simplify right side
   12,425.45x = 155,500,475.06
5. Step 5: Solve for x
   x = 155,500,475.06/12,425.45
6. Step 6: Final answer
   x = 12,514.68