Finding the Fourth Proportional to 9,668.16, 13,374.72 and 9,318.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,668.16 : 13,374.72 = 9,318.24 : x
2. Step 2: Convert to fraction form
   9,668.16/13,374.72 = 9,318.24/x
3. Step 3: Cross multiply
   9,668.16x = 13,374.72 × 9,318.24
4. Step 4: Simplify right side
   9,668.16x = 124,628,850.89
5. Step 5: Solve for x
   x = 124,628,850.89/9,668.16
6. Step 6: Final answer
   x = 12,890.65