Finding the Fourth Proportional to 72.36, 108.52 and 33.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72.36 : 108.52 = 33.80 : x
2. Step 2: Convert to fraction form
   72.36/108.52 = 33.80/x
3. Step 3: Cross multiply
   72.36x = 108.52 × 33.80
4. Step 4: Simplify right side
   72.36x = 3,667.90
5. Step 5: Solve for x
   x = 3,667.90/72.36
6. Step 6: Final answer
   x = 50.69