Finding the Fourth Proportional to 35.83, 53.72 and 18.73

Step by Step Solution

1. Step 1: Write the proportion equation
   35.83 : 53.72 = 18.73 : x
2. Step 2: Convert to fraction form
   35.83/53.72 = 18.73/x
3. Step 3: Cross multiply
   35.83x = 53.72 × 18.73
4. Step 4: Simplify right side
   35.83x = 1,005.81
5. Step 5: Solve for x
   x = 1,005.81/35.83
6. Step 6: Final answer
   x = 28.08