Finding the Fourth Proportional to 11.34, 15.56 and 10.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11.34 : 15.56 = 10.72 : x
2. Step 2: Convert to fraction form
   11.34/15.56 = 10.72/x
3. Step 3: Cross multiply
   11.34x = 15.56 × 10.72
4. Step 4: Simplify right side
   11.34x = 166.80
5. Step 5: Solve for x
   x = 166.80/11.34
6. Step 6: Final answer
   x = 14.71