Finding the Fourth Proportional to 12,146.15, 16,766.39 and 9,494.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.15 : 16,766.39 = 9,494.42 : x
2. Step 2: Convert to fraction form
   12,146.15/16,766.39 = 9,494.42/x
3. Step 3: Cross multiply
   12,146.15x = 16,766.39 × 9,494.42
4. Step 4: Simplify right side
   12,146.15x = 159,187,088.45
5. Step 5: Solve for x
   x = 159,187,088.45/12,146.15
6. Step 6: Final answer
   x = 13,105.97