Finding the Fourth Proportional to 72.91, 109.38 and 24.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72.91 : 109.38 = 24.81 : x
2. Step 2: Convert to fraction form
   72.91/109.38 = 24.81/x
3. Step 3: Cross multiply
   72.91x = 109.38 × 24.81
4. Step 4: Simplify right side
   72.91x = 2,713.72
5. Step 5: Solve for x
   x = 2,713.72/72.91
6. Step 6: Final answer
   x = 37.22