Finding the Fourth Proportional to 16,723.27, 23,078.10 and 9,169.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,723.27 : 23,078.10 = 9,169.72 : x
2. Step 2: Convert to fraction form
   16,723.27/23,078.10 = 9,169.72/x
3. Step 3: Cross multiply
   16,723.27x = 23,078.10 × 9,169.72
4. Step 4: Simplify right side
   16,723.27x = 211,619,669.28
5. Step 5: Solve for x
   x = 211,619,669.28/16,723.27
6. Step 6: Final answer
   x = 12,654.21