Finding the Fourth Proportional to 85.71, 128.52 and 24.82

Step by Step Solution

1. Step 1: Write the proportion equation
   85.71 : 128.52 = 24.82 : x
2. Step 2: Convert to fraction form
   85.71/128.52 = 24.82/x
3. Step 3: Cross multiply
   85.71x = 128.52 × 24.82
4. Step 4: Simplify right side
   85.71x = 3,189.84
5. Step 5: Solve for x
   x = 3,189.84/85.71
6. Step 6: Final answer
   x = 37.22