Finding the Fourth Proportional to 62.88, 86.79 and 38.00

Step by Step Solution

1. Step 1: Write the proportion equation
   62.88 : 86.79 = 38.00 : x
2. Step 2: Convert to fraction form
   62.88/86.79 = 38.00/x
3. Step 3: Cross multiply
   62.88x = 86.79 × 38.00
4. Step 4: Simplify right side
   62.88x = 3,297.59
5. Step 5: Solve for x
   x = 3,297.59/62.88
6. Step 6: Final answer
   x = 52.44