Finding the Fourth Proportional to 67.83, 93.60 and 38.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67.83 : 93.60 = 38.72 : x
2. Step 2: Convert to fraction form
   67.83/93.60 = 38.72/x
3. Step 3: Cross multiply
   67.83x = 93.60 × 38.72
4. Step 4: Simplify right side
   67.83x = 3,624.22
5. Step 5: Solve for x
   x = 3,624.22/67.83
6. Step 6: Final answer
   x = 53.43