Finding the Fourth Proportional to 11,648.48, 16,081.50 and 7,681.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,648.48 : 16,081.50 = 7,681.16 : x
2. Step 2: Convert to fraction form
   11,648.48/16,081.50 = 7,681.16/x
3. Step 3: Cross multiply
   11,648.48x = 16,081.50 × 7,681.16
4. Step 4: Simplify right side
   11,648.48x = 123,524,574.54
5. Step 5: Solve for x
   x = 123,524,574.54/11,648.48
6. Step 6: Final answer
   x = 10,604.35