Finding the Fourth Proportional to 20,945.27, 28,874.72 and 16,658.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,945.27 : 28,874.72 = 16,658.75 : x
2. Step 2: Convert to fraction form
   20,945.27/28,874.72 = 16,658.75/x
3. Step 3: Cross multiply
   20,945.27x = 28,874.72 × 16,658.75
4. Step 4: Simplify right side
   20,945.27x = 481,016,597.43
5. Step 5: Solve for x
   x = 481,016,597.43/20,945.27
6. Step 6: Final answer
   x = 22,965.41