Finding the Fourth Proportional to 12,339.59, 17,028.59 and 6,674.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,339.59 : 17,028.59 = 6,674.36 : x
2. Step 2: Convert to fraction form
   12,339.59/17,028.59 = 6,674.36/x
3. Step 3: Cross multiply
   12,339.59x = 17,028.59 × 6,674.36
4. Step 4: Simplify right side
   12,339.59x = 113,654,871.50
5. Step 5: Solve for x
   x = 113,654,871.50/12,339.59
6. Step 6: Final answer
   x = 9,210.59