Finding the Fourth Proportional to 12,668.83, 17,478.72 and 8,198.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,668.83 : 17,478.72 = 8,198.24 : x
2. Step 2: Convert to fraction form
   12,668.83/17,478.72 = 8,198.24/x
3. Step 3: Cross multiply
   12,668.83x = 17,478.72 × 8,198.24
4. Step 4: Simplify right side
   12,668.83x = 143,294,741.45
5. Step 5: Solve for x
   x = 143,294,741.45/12,668.83
6. Step 6: Final answer
   x = 11,310.81