Finding the Fourth Proportional to 12,425.10, 17,146.71 and 7,120.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,425.10 : 17,146.71 = 7,120.14 : x
2. Step 2: Convert to fraction form
   12,425.10/17,146.71 = 7,120.14/x
3. Step 3: Cross multiply
   12,425.10x = 17,146.71 × 7,120.14
4. Step 4: Simplify right side
   12,425.10x = 122,086,975.74
5. Step 5: Solve for x
   x = 122,086,975.74/12,425.10
6. Step 6: Final answer
   x = 9,825.83