Finding the Fourth Proportional to 9,667.50, 13,318.38 and 9,086.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.50 : 13,318.38 = 9,086.24 : x
2. Step 2: Convert to fraction form
   9,667.50/13,318.38 = 9,086.24/x
3. Step 3: Cross multiply
   9,667.50x = 13,318.38 × 9,086.24
4. Step 4: Simplify right side
   9,667.50x = 121,013,930.50
5. Step 5: Solve for x
   x = 121,013,930.50/9,667.50
6. Step 6: Final answer
   x = 12,517.60