Finding the Fourth Proportional to 16,640.38, 24,938.69 and 8,211.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,640.38 : 24,938.69 = 8,211.52 : x
2. Step 2: Convert to fraction form
   16,640.38/24,938.69 = 8,211.52/x
3. Step 3: Cross multiply
   16,640.38x = 24,938.69 × 8,211.52
4. Step 4: Simplify right side
   16,640.38x = 204,784,427.02
5. Step 5: Solve for x
   x = 204,784,427.02/16,640.38
6. Step 6: Final answer
   x = 12,306.48