Finding the Fourth Proportional to 67.56, 101.31 and 21.89

Step by Step Solution

1. Step 1: Write the proportion equation
   67.56 : 101.31 = 21.89 : x
2. Step 2: Convert to fraction form
   67.56/101.31 = 21.89/x
3. Step 3: Cross multiply
   67.56x = 101.31 × 21.89
4. Step 4: Simplify right side
   67.56x = 2,217.85
5. Step 5: Solve for x
   x = 2,217.85/67.56
6. Step 6: Final answer
   x = 32.83