Finding the Fourth Proportional to 42.98, 64.43 and 22.41

Step by Step Solution

1. Step 1: Write the proportion equation
   42.98 : 64.43 = 22.41 : x
2. Step 2: Convert to fraction form
   42.98/64.43 = 22.41/x
3. Step 3: Cross multiply
   42.98x = 64.43 × 22.41
4. Step 4: Simplify right side
   42.98x = 1,443.69
5. Step 5: Solve for x
   x = 1,443.69/42.98
6. Step 6: Final answer
   x = 33.59