Finding the Fourth Proportional to 12,146.15, 16,736.71 and 9,313.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.15 : 16,736.71 = 9,313.38 : x
2. Step 2: Convert to fraction form
   12,146.15/16,736.71 = 9,313.38/x
3. Step 3: Cross multiply
   12,146.15x = 16,736.71 × 9,313.38
4. Step 4: Simplify right side
   12,146.15x = 155,875,209.93
5. Step 5: Solve for x
   x = 155,875,209.93/12,146.15
6. Step 6: Final answer
   x = 12,833.31