Finding the Fourth Proportional to 11.18, 16.72 and 10.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11.18 : 16.72 = 10.82 : x
2. Step 2: Convert to fraction form
   11.18/16.72 = 10.82/x
3. Step 3: Cross multiply
   11.18x = 16.72 × 10.82
4. Step 4: Simplify right side
   11.18x = 180.91
5. Step 5: Solve for x
   x = 180.91/11.18
6. Step 6: Final answer
   x = 16.18