Finding the Fourth Proportional to 69.22, 103.83 and 28.10

Step by Step Solution

1. Step 1: Write the proportion equation
   69.22 : 103.83 = 28.10 : x
2. Step 2: Convert to fraction form
   69.22/103.83 = 28.10/x
3. Step 3: Cross multiply
   69.22x = 103.83 × 28.10
4. Step 4: Simplify right side
   69.22x = 2,917.78
5. Step 5: Solve for x
   x = 2,917.78/69.22
6. Step 6: Final answer
   x = 42.15