Finding the Fourth Proportional to 72.98, 100.74 and 52.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72.98 : 100.74 = 52.36 : x
2. Step 2: Convert to fraction form
   72.98/100.74 = 52.36/x
3. Step 3: Cross multiply
   72.98x = 100.74 × 52.36
4. Step 4: Simplify right side
   72.98x = 5,274.69
5. Step 5: Solve for x
   x = 5,274.69/72.98
6. Step 6: Final answer
   x = 72.28