Finding the Fourth Proportional to 11.16, 15.39 and 10.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11.16 : 15.39 = 10.83 : x
2. Step 2: Convert to fraction form
   11.16/15.39 = 10.83/x
3. Step 3: Cross multiply
   11.16x = 15.39 × 10.83
4. Step 4: Simplify right side
   11.16x = 166.67
5. Step 5: Solve for x
   x = 166.67/11.16
6. Step 6: Final answer
   x = 14.93