Finding the Fourth Proportional to 11.56, 15.94 and 9.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11.56 : 15.94 = 9.83 : x
2. Step 2: Convert to fraction form
   11.56/15.94 = 9.83/x
3. Step 3: Cross multiply
   11.56x = 15.94 × 9.83
4. Step 4: Simplify right side
   11.56x = 156.69
5. Step 5: Solve for x
   x = 156.69/11.56
6. Step 6: Final answer
   x = 13.55