Finding the Fourth Proportional to 12,917.53, 17,833.61 and 8,676.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,917.53 : 17,833.61 = 8,676.14 : x
2. Step 2: Convert to fraction form
   12,917.53/17,833.61 = 8,676.14/x
3. Step 3: Cross multiply
   12,917.53x = 17,833.61 × 8,676.14
4. Step 4: Simplify right side
   12,917.53x = 154,726,853.68
5. Step 5: Solve for x
   x = 154,726,853.68/12,917.53
6. Step 6: Final answer
   x = 11,978.06