Finding the Fourth Proportional to 11.37, 15.72 and 11.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11.37 : 15.72 = 11.10 : x
2. Step 2: Convert to fraction form
   11.37/15.72 = 11.10/x
3. Step 3: Cross multiply
   11.37x = 15.72 × 11.10
4. Step 4: Simplify right side
   11.37x = 174.49
5. Step 5: Solve for x
   x = 174.49/11.37
6. Step 6: Final answer
   x = 15.35