Finding the Fourth Proportional to 13,351.92, 18,426.52 and 7,687.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,351.92 : 18,426.52 = 7,687.38 : x
2. Step 2: Convert to fraction form
   13,351.92/18,426.52 = 7,687.38/x
3. Step 3: Cross multiply
   13,351.92x = 18,426.52 × 7,687.38
4. Step 4: Simplify right side
   13,351.92x = 141,651,661.32
5. Step 5: Solve for x
   x = 141,651,661.32/13,351.92
6. Step 6: Final answer
   x = 10,609.09