Finding the Fourth Proportional to 11.32, 15.52 and 10.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11.32 : 15.52 = 10.78 : x
2. Step 2: Convert to fraction form
   11.32/15.52 = 10.78/x
3. Step 3: Cross multiply
   11.32x = 15.52 × 10.78
4. Step 4: Simplify right side
   11.32x = 167.31
5. Step 5: Solve for x
   x = 167.31/11.32
6. Step 6: Final answer
   x = 14.78