Finding the Fourth Proportional to 12,618.43, 17,394.75 and 8,080.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,618.43 : 17,394.75 = 8,080.61 : x
2. Step 2: Convert to fraction form
   12,618.43/17,394.75 = 8,080.61/x
3. Step 3: Cross multiply
   12,618.43x = 17,394.75 × 8,080.61
4. Step 4: Simplify right side
   12,618.43x = 140,560,103.82
5. Step 5: Solve for x
   x = 140,560,103.82/12,618.43
6. Step 6: Final answer
   x = 11,139.27