Finding the Fourth Proportional to 13.16, 18.15 and 10.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13.16 : 18.15 = 10.83 : x
2. Step 2: Convert to fraction form
   13.16/18.15 = 10.83/x
3. Step 3: Cross multiply
   13.16x = 18.15 × 10.83
4. Step 4: Simplify right side
   13.16x = 196.42
5. Step 5: Solve for x
   x = 196.42/13.16
6. Step 6: Final answer
   x = 14.93