Finding the Fourth Proportional to 12,451.26, 17,185.10 and 7,418.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,451.26 : 17,185.10 = 7,418.42 : x
2. Step 2: Convert to fraction form
   12,451.26/17,185.10 = 7,418.42/x
3. Step 3: Cross multiply
   12,451.26x = 17,185.10 × 7,418.42
4. Step 4: Simplify right side
   12,451.26x = 127,486,166.52
5. Step 5: Solve for x
   x = 127,486,166.52/12,451.26
6. Step 6: Final answer
   x = 10,238.82