Finding the Fourth Proportional to 11.59, 15.99 and 7.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11.59 : 15.99 = 7.50 : x
2. Step 2: Convert to fraction form
   11.59/15.99 = 7.50/x
3. Step 3: Cross multiply
   11.59x = 15.99 × 7.50
4. Step 4: Simplify right side
   11.59x = 119.93
5. Step 5: Solve for x
   x = 119.93/11.59
6. Step 6: Final answer
   x = 10.35