Finding the Fourth Proportional to 11.39, 15.73 and 10.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11.39 : 15.73 = 10.49 : x
2. Step 2: Convert to fraction form
   11.39/15.73 = 10.49/x
3. Step 3: Cross multiply
   11.39x = 15.73 × 10.49
4. Step 4: Simplify right side
   11.39x = 164.93
5. Step 5: Solve for x
   x = 164.93/11.39
6. Step 6: Final answer
   x = 14.49