Finding the Fourth Proportional to 72.94, 109.41 and 18.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72.94 : 109.41 = 18.84 : x
2. Step 2: Convert to fraction form
   72.94/109.41 = 18.84/x
3. Step 3: Cross multiply
   72.94x = 109.41 × 18.84
4. Step 4: Simplify right side
   72.94x = 2,061.28
5. Step 5: Solve for x
   x = 2,061.28/72.94
6. Step 6: Final answer
   x = 28.26