Finding the Fourth Proportional to 16,680, 23,014.71 and 9,964.59

Step by Step Solution

1. Step 1: Write the proportion equation
   16,680 : 23,014.71 = 9,964.59 : x
2. Step 2: Convert to fraction form
   16,680/23,014.71 = 9,964.59/x
3. Step 3: Cross multiply
   16,680x = 23,014.71 × 9,964.59
4. Step 4: Simplify right side
   16,680x = 229,332,149.12
5. Step 5: Solve for x
   x = 229,332,149.12/16,680
6. Step 6: Final answer
   x = 13,748.93