Finding the Fourth Proportional to 12,168.96, 16,789.04 and 9,926.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,168.96 : 16,789.04 = 9,926.92 : x
2. Step 2: Convert to fraction form
   12,168.96/16,789.04 = 9,926.92/x
3. Step 3: Cross multiply
   12,168.96x = 16,789.04 × 9,926.92
4. Step 4: Simplify right side
   12,168.96x = 166,663,456.96
5. Step 5: Solve for x
   x = 166,663,456.96/12,168.96
6. Step 6: Final answer
   x = 13,695.78