Finding the Fourth Proportional to 28.55, 42.83 and 18.41

Step by Step Solution

1. Step 1: Write the proportion equation
   28.55 : 42.83 = 18.41 : x
2. Step 2: Convert to fraction form
   28.55/42.83 = 18.41/x
3. Step 3: Cross multiply
   28.55x = 42.83 × 18.41
4. Step 4: Simplify right side
   28.55x = 788.50
5. Step 5: Solve for x
   x = 788.50/28.55
6. Step 6: Final answer
   x = 27.62