Finding the Fourth Proportional to 11.41, 15.69 and 10.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11.41 : 15.69 = 10.09 : x
2. Step 2: Convert to fraction form
   11.41/15.69 = 10.09/x
3. Step 3: Cross multiply
   11.41x = 15.69 × 10.09
4. Step 4: Simplify right side
   11.41x = 158.37
5. Step 5: Solve for x
   x = 158.37/11.41
6. Step 6: Final answer
   x = 13.88