Finding the Fourth Proportional to 28.14, 42.42 and 28.08

Step by Step Solution

1. Step 1: Write the proportion equation
   28.14 : 42.42 = 28.08 : x
2. Step 2: Convert to fraction form
   28.14/42.42 = 28.08/x
3. Step 3: Cross multiply
   28.14x = 42.42 × 28.08
4. Step 4: Simplify right side
   28.14x = 1,191.15
5. Step 5: Solve for x
   x = 1,191.15/28.14
6. Step 6: Final answer
   x = 42.33