Finding the Fourth Proportional to 11.16, 15.31 and 10.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11.16 : 15.31 = 10.76 : x
2. Step 2: Convert to fraction form
   11.16/15.31 = 10.76/x
3. Step 3: Cross multiply
   11.16x = 15.31 × 10.76
4. Step 4: Simplify right side
   11.16x = 164.67
5. Step 5: Solve for x
   x = 164.67/11.16
6. Step 6: Final answer
   x = 14.76