Finding the Fourth Proportional to 72.73, 109.09 and 21.37

Step by Step Solution

1. Step 1: Write the proportion equation
   72.73 : 109.09 = 21.37 : x
2. Step 2: Convert to fraction form
   72.73/109.09 = 21.37/x
3. Step 3: Cross multiply
   72.73x = 109.09 × 21.37
4. Step 4: Simplify right side
   72.73x = 2,331.15
5. Step 5: Solve for x
   x = 2,331.15/72.73
6. Step 6: Final answer
   x = 32.05