Finding the Fourth Proportional to 11,678.17, 16,115.88 and 8,326.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,678.17 : 16,115.88 = 8,326.82 : x
2. Step 2: Convert to fraction form
   11,678.17/16,115.88 = 8,326.82/x
3. Step 3: Cross multiply
   11,678.17x = 16,115.88 × 8,326.82
4. Step 4: Simplify right side
   11,678.17x = 134,194,031.90
5. Step 5: Solve for x
   x = 134,194,031.90/11,678.17
6. Step 6: Final answer
   x = 11,491.02