Finding the Fourth Proportional to 16.56, 24.83 and 5.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16.56 : 24.83 = 5.72 : x
2. Step 2: Convert to fraction form
   16.56/24.83 = 5.72/x
3. Step 3: Cross multiply
   16.56x = 24.83 × 5.72
4. Step 4: Simplify right side
   16.56x = 142.10
5. Step 5: Solve for x
   x = 142.10/16.56
6. Step 6: Final answer
   x = 8.58