Finding the Fourth Proportional to 89.34, 133.89 and 35.21

Step by Step Solution

1. Step 1: Write the proportion equation
   89.34 : 133.89 = 35.21 : x
2. Step 2: Convert to fraction form
   89.34/133.89 = 35.21/x
3. Step 3: Cross multiply
   89.34x = 133.89 × 35.21
4. Step 4: Simplify right side
   89.34x = 4,713.60
5. Step 5: Solve for x
   x = 4,713.60/89.34
6. Step 6: Final answer
   x = 52.76