Finding the Fourth Proportional to 16,780.46, 25,148.12 and 8,466.45

Step by Step Solution

1. Step 1: Write the proportion equation
   16,780.46 : 25,148.12 = 8,466.45 : x
2. Step 2: Convert to fraction form
   16,780.46/25,148.12 = 8,466.45/x
3. Step 3: Cross multiply
   16,780.46x = 25,148.12 × 8,466.45
4. Step 4: Simplify right side
   16,780.46x = 212,915,300.57
5. Step 5: Solve for x
   x = 212,915,300.57/16,780.46
6. Step 6: Final answer
   x = 12,688.29