Finding the Fourth Proportional to 17,339.98, 25,990.10 and 8,459.94

Step by Step Solution

1. Step 1: Write the proportion equation
   17,339.98 : 25,990.10 = 8,459.94 : x
2. Step 2: Convert to fraction form
   17,339.98/25,990.10 = 8,459.94/x
3. Step 3: Cross multiply
   17,339.98x = 25,990.10 × 8,459.94
4. Step 4: Simplify right side
   17,339.98x = 219,874,686.59
5. Step 5: Solve for x
   x = 219,874,686.59/17,339.98
6. Step 6: Final answer
   x = 12,680.22