Finding the Fourth Proportional to 69.98, 104.98 and 21.89

Step by Step Solution

1. Step 1: Write the proportion equation
   69.98 : 104.98 = 21.89 : x
2. Step 2: Convert to fraction form
   69.98/104.98 = 21.89/x
3. Step 3: Cross multiply
   69.98x = 104.98 × 21.89
4. Step 4: Simplify right side
   69.98x = 2,298.22
5. Step 5: Solve for x
   x = 2,298.22/69.98
6. Step 6: Final answer
   x = 32.84