Finding the Fourth Proportional to 16,960.32, 23,399.28 and 9,885.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,960.32 : 23,399.28 = 9,885.24 : x
2. Step 2: Convert to fraction form
   16,960.32/23,399.28 = 9,885.24/x
3. Step 3: Cross multiply
   16,960.32x = 23,399.28 × 9,885.24
4. Step 4: Simplify right side
   16,960.32x = 231,307,498.63
5. Step 5: Solve for x
   x = 231,307,498.63/16,960.32
6. Step 6: Final answer
   x = 13,638.16