Finding the Fourth Proportional to 33.18, 49.83 and 28.18

Step by Step Solution

1. Step 1: Write the proportion equation
   33.18 : 49.83 = 28.18 : x
2. Step 2: Convert to fraction form
   33.18/49.83 = 28.18/x
3. Step 3: Cross multiply
   33.18x = 49.83 × 28.18
4. Step 4: Simplify right side
   33.18x = 1,404.21
5. Step 5: Solve for x
   x = 1,404.21/33.18
6. Step 6: Final answer
   x = 42.32