Finding the Fourth Proportional to 10,918.72, 15,068.46 and 10,286.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,918.72 : 15,068.46 = 10,286.92 : x
2. Step 2: Convert to fraction form
   10,918.72/15,068.46 = 10,286.92/x
3. Step 3: Cross multiply
   10,918.72x = 15,068.46 × 10,286.92
4. Step 4: Simplify right side
   10,918.72x = 155,008,042.54
5. Step 5: Solve for x
   x = 155,008,042.54/10,918.72
6. Step 6: Final answer
   x = 14,196.54