Finding the Fourth Proportional to 13,234.38, 18,260.91 and 8,456.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,234.38 : 18,260.91 = 8,456.82 : x
2. Step 2: Convert to fraction form
   13,234.38/18,260.91 = 8,456.82/x
3. Step 3: Cross multiply
   13,234.38x = 18,260.91 × 8,456.82
4. Step 4: Simplify right side
   13,234.38x = 154,429,228.91
5. Step 5: Solve for x
   x = 154,429,228.91/13,234.38
6. Step 6: Final answer
   x = 11,668.79