Finding the Fourth Proportional to 10.69, 15.94 and 10.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10.69 : 15.94 = 10.18 : x
2. Step 2: Convert to fraction form
   10.69/15.94 = 10.18/x
3. Step 3: Cross multiply
   10.69x = 15.94 × 10.18
4. Step 4: Simplify right side
   10.69x = 162.14
5. Step 5: Solve for x
   x = 162.14/10.69
6. Step 6: Final answer
   x = 15.17