Finding the Fourth Proportional to 40.50, 60.71 and 18.82

Step by Step Solution

1. Step 1: Write the proportion equation
   40.50 : 60.71 = 18.82 : x
2. Step 2: Convert to fraction form
   40.50/60.71 = 18.82/x
3. Step 3: Cross multiply
   40.50x = 60.71 × 18.82
4. Step 4: Simplify right side
   40.50x = 1,142.42
5. Step 5: Solve for x
   x = 1,142.42/40.50
6. Step 6: Final answer
   x = 28.21