Finding the Fourth Proportional to 12,365.98, 17,065.89 and 6,986.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,365.98 : 17,065.89 = 6,986.55 : x
2. Step 2: Convert to fraction form
   12,365.98/17,065.89 = 6,986.55/x
3. Step 3: Cross multiply
   12,365.98x = 17,065.89 × 6,986.55
4. Step 4: Simplify right side
   12,365.98x = 119,231,757.78
5. Step 5: Solve for x
   x = 119,231,757.78/12,365.98
6. Step 6: Final answer
   x = 9,641.91