Finding the Fourth Proportional to 16,668.96, 23,002.32 and 9,215.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,668.96 : 23,002.32 = 9,215.52 : x
2. Step 2: Convert to fraction form
   16,668.96/23,002.32 = 9,215.52/x
3. Step 3: Cross multiply
   16,668.96x = 23,002.32 × 9,215.52
4. Step 4: Simplify right side
   16,668.96x = 211,978,340.01
5. Step 5: Solve for x
   x = 211,978,340.01/16,668.96
6. Step 6: Final answer
   x = 12,716.95