Finding the Fourth Proportional to 12,078.69, 16,662.92 and 8,543.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.69 : 16,662.92 = 8,543.85 : x
2. Step 2: Convert to fraction form
   12,078.69/16,662.92 = 8,543.85/x
3. Step 3: Cross multiply
   12,078.69x = 16,662.92 × 8,543.85
4. Step 4: Simplify right side
   12,078.69x = 142,365,446.32
5. Step 5: Solve for x
   x = 142,365,446.32/12,078.69
6. Step 6: Final answer
   x = 11,786.50