Finding the Fourth Proportional to 28.71, 42.83 and 24.15

Step by Step Solution

1. Step 1: Write the proportion equation
   28.71 : 42.83 = 24.15 : x
2. Step 2: Convert to fraction form
   28.71/42.83 = 24.15/x
3. Step 3: Cross multiply
   28.71x = 42.83 × 24.15
4. Step 4: Simplify right side
   28.71x = 1,034.22
5. Step 5: Solve for x
   x = 1,034.22/28.71
6. Step 6: Final answer
   x = 36.02