Finding the Fourth Proportional to 67.08, 100.62 and 18.98

Step by Step Solution

1. Step 1: Write the proportion equation
   67.08 : 100.62 = 18.98 : x
2. Step 2: Convert to fraction form
   67.08/100.62 = 18.98/x
3. Step 3: Cross multiply
   67.08x = 100.62 × 18.98
4. Step 4: Simplify right side
   67.08x = 1,910.15
5. Step 5: Solve for x
   x = 1,910.15/67.08
6. Step 6: Final answer
   x = 28.48