Finding the Fourth Proportional to 11,002.16, 16,423.56 and 9,672.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,002.16 : 16,423.56 = 9,672.08 : x
2. Step 2: Convert to fraction form
   11,002.16/16,423.56 = 9,672.08/x
3. Step 3: Cross multiply
   11,002.16x = 16,423.56 × 9,672.08
4. Step 4: Simplify right side
   11,002.16x = 158,849,986.20
5. Step 5: Solve for x
   x = 158,849,986.20/11,002.16
6. Step 6: Final answer
   x = 14,438.07