Finding the Fourth Proportional to 12,401.12, 17,101.80 and 8,144.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.12 : 17,101.80 = 8,144.69 : x
2. Step 2: Convert to fraction form
   12,401.12/17,101.80 = 8,144.69/x
3. Step 3: Cross multiply
   12,401.12x = 17,101.80 × 8,144.69
4. Step 4: Simplify right side
   12,401.12x = 139,288,859.44
5. Step 5: Solve for x
   x = 139,288,859.44/12,401.12
6. Step 6: Final answer
   x = 11,231.96