Finding the Fourth Proportional to 11.29, 16.83 and 10.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11.29 : 16.83 = 10.15 : x
2. Step 2: Convert to fraction form
   11.29/16.83 = 10.15/x
3. Step 3: Cross multiply
   11.29x = 16.83 × 10.15
4. Step 4: Simplify right side
   11.29x = 170.82
5. Step 5: Solve for x
   x = 170.82/11.29
6. Step 6: Final answer
   x = 15.13