Finding the Fourth Proportional to 12,425, 17,137.82 and 8,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,425 : 17,137.82 = 8,174.72 : x
2. Step 2: Convert to fraction form
   12,425/17,137.82 = 8,174.72/x
3. Step 3: Cross multiply
   12,425x = 17,137.82 × 8,174.72
4. Step 4: Simplify right side
   12,425x = 140,096,879.91
5. Step 5: Solve for x
   x = 140,096,879.91/12,425
6. Step 6: Final answer
   x = 11,275.40