Finding the Fourth Proportional to 16,638.78, 24,959.52 and 8,313.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,638.78 : 24,959.52 = 8,313.34 : x
2. Step 2: Convert to fraction form
   16,638.78/24,959.52 = 8,313.34/x
3. Step 3: Cross multiply
   16,638.78x = 24,959.52 × 8,313.34
4. Step 4: Simplify right side
   16,638.78x = 207,496,976.00
5. Step 5: Solve for x
   x = 207,496,976.00/16,638.78
6. Step 6: Final answer
   x = 12,470.68