Finding the Fourth Proportional to 16,280.10, 22,466.94 and 9,109.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,280.10 : 22,466.94 = 9,109.78 : x
2. Step 2: Convert to fraction form
   16,280.10/22,466.94 = 9,109.78/x
3. Step 3: Cross multiply
   16,280.10x = 22,466.94 × 9,109.78
4. Step 4: Simplify right side
   16,280.10x = 204,668,880.67
5. Step 5: Solve for x
   x = 204,668,880.67/16,280.10
6. Step 6: Final answer
   x = 12,571.72