Finding the Fourth Proportional to 11.31, 16.96 and 5.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11.31 : 16.96 = 5.30 : x
2. Step 2: Convert to fraction form
   11.31/16.96 = 5.30/x
3. Step 3: Cross multiply
   11.31x = 16.96 × 5.30
4. Step 4: Simplify right side
   11.31x = 89.89
5. Step 5: Solve for x
   x = 89.89/11.31
6. Step 6: Final answer
   x = 7.95