Finding the Fourth Proportional to 72.18, 108.34 and 37.96

Step by Step Solution

1. Step 1: Write the proportion equation
   72.18 : 108.34 = 37.96 : x
2. Step 2: Convert to fraction form
   72.18/108.34 = 37.96/x
3. Step 3: Cross multiply
   72.18x = 108.34 × 37.96
4. Step 4: Simplify right side
   72.18x = 4,112.22
5. Step 5: Solve for x
   x = 4,112.22/72.18
6. Step 6: Final answer
   x = 56.97