Finding the Fourth Proportional to 11.52, 15.98 and 11.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11.52 : 15.98 = 11.15 : x
2. Step 2: Convert to fraction form
   11.52/15.98 = 11.15/x
3. Step 3: Cross multiply
   11.52x = 15.98 × 11.15
4. Step 4: Simplify right side
   11.52x = 178.10
5. Step 5: Solve for x
   x = 178.10/11.52
6. Step 6: Final answer
   x = 15.46