Finding the Fourth Proportional to 11.71, 16.18 and 7.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11.71 : 16.18 = 7.63 : x
2. Step 2: Convert to fraction form
   11.71/16.18 = 7.63/x
3. Step 3: Cross multiply
   11.71x = 16.18 × 7.63
4. Step 4: Simplify right side
   11.71x = 123.39
5. Step 5: Solve for x
   x = 123.39/11.71
6. Step 6: Final answer
   x = 10.54