Finding the Fourth Proportional to 16,426.38, 24,640.56 and 11,159.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,426.38 : 24,640.56 = 11,159.16 : x
2. Step 2: Convert to fraction form
   16,426.38/24,640.56 = 11,159.16/x
3. Step 3: Cross multiply
   16,426.38x = 24,640.56 × 11,159.16
4. Step 4: Simplify right side
   16,426.38x = 274,967,951.53
5. Step 5: Solve for x
   x = 274,967,951.53/16,426.38
6. Step 6: Final answer
   x = 16,739.41