Finding the Fourth Proportional to 69.28, 103.89 and 28.69

Step by Step Solution

1. Step 1: Write the proportion equation
   69.28 : 103.89 = 28.69 : x
2. Step 2: Convert to fraction form
   69.28/103.89 = 28.69/x
3. Step 3: Cross multiply
   69.28x = 103.89 × 28.69
4. Step 4: Simplify right side
   69.28x = 2,980.60
5. Step 5: Solve for x
   x = 2,980.60/69.28
6. Step 6: Final answer
   x = 43.02