Finding the Fourth Proportional to 28.00, 42.00 and 26.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28.00 : 42.00 = 26.12 : x
2. Step 2: Convert to fraction form
   28.00/42.00 = 26.12/x
3. Step 3: Cross multiply
   28.00x = 42.00 × 26.12
4. Step 4: Simplify right side
   28.00x = 1,096.70
5. Step 5: Solve for x
   x = 1,096.70/28.00
6. Step 6: Final answer
   x = 39.17