Finding the Fourth Proportional to 16,643.50, 24,984.45 and 8,452.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,643.50 : 24,984.45 = 8,452.78 : x
2. Step 2: Convert to fraction form
   16,643.50/24,984.45 = 8,452.78/x
3. Step 3: Cross multiply
   16,643.50x = 24,984.45 × 8,452.78
4. Step 4: Simplify right side
   16,643.50x = 211,188,059.27
5. Step 5: Solve for x
   x = 211,188,059.27/16,643.50
6. Step 6: Final answer
   x = 12,688.92