Finding the Fourth Proportional to 22.42, 33.42 and 21.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22.42 : 33.42 = 21.82 : x
2. Step 2: Convert to fraction form
   22.42/33.42 = 21.82/x
3. Step 3: Cross multiply
   22.42x = 33.42 × 21.82
4. Step 4: Simplify right side
   22.42x = 729.22
5. Step 5: Solve for x
   x = 729.22/22.42
6. Step 6: Final answer
   x = 32.53