Finding the Fourth Proportional to 28.37, 42.24 and 28.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28.37 : 42.24 = 28.10 : x
2. Step 2: Convert to fraction form
   28.37/42.24 = 28.10/x
3. Step 3: Cross multiply
   28.37x = 42.24 × 28.10
4. Step 4: Simplify right side
   28.37x = 1,186.94
5. Step 5: Solve for x
   x = 1,186.94/28.37
6. Step 6: Final answer
   x = 41.84