Finding the Fourth Proportional to 42.83, 59.10 and 28.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42.83 : 59.10 = 28.28 : x
2. Step 2: Convert to fraction form
   42.83/59.10 = 28.28/x
3. Step 3: Cross multiply
   42.83x = 59.10 × 28.28
4. Step 4: Simplify right side
   42.83x = 1,671.39
5. Step 5: Solve for x
   x = 1,671.39/42.83
6. Step 6: Final answer
   x = 39.02