Finding the Fourth Proportional to 72.89, 109.37 and 24.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72.89 : 109.37 = 24.80 : x
2. Step 2: Convert to fraction form
   72.89/109.37 = 24.80/x
3. Step 3: Cross multiply
   72.89x = 109.37 × 24.80
4. Step 4: Simplify right side
   72.89x = 2,711.71
5. Step 5: Solve for x
   x = 2,711.71/72.89
6. Step 6: Final answer
   x = 37.20