Finding the Fourth Proportional to 72.63, 108.94 and 18.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72.63 : 108.94 = 18.52 : x
2. Step 2: Convert to fraction form
   72.63/108.94 = 18.52/x
3. Step 3: Cross multiply
   72.63x = 108.94 × 18.52
4. Step 4: Simplify right side
   72.63x = 2,017.73
5. Step 5: Solve for x
   x = 2,017.73/72.63
6. Step 6: Final answer
   x = 27.78