Finding the Fourth Proportional to 16,638.57, 24,945.54 and 7,863.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,638.57 : 24,945.54 = 7,863.24 : x
2. Step 2: Convert to fraction form
   16,638.57/24,945.54 = 7,863.24/x
3. Step 3: Cross multiply
   16,638.57x = 24,945.54 × 7,863.24
4. Step 4: Simplify right side
   16,638.57x = 196,152,767.95
5. Step 5: Solve for x
   x = 196,152,767.95/16,638.57
6. Step 6: Final answer
   x = 11,789.04