Finding the Fourth Proportional to 7,721.80, 10,650.66 and 7,464.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,721.80 : 10,650.66 = 7,464.82 : x
2. Step 2: Convert to fraction form
   7,721.80/10,650.66 = 7,464.82/x
3. Step 3: Cross multiply
   7,721.80x = 10,650.66 × 7,464.82
4. Step 4: Simplify right side
   7,721.80x = 79,505,259.78
5. Step 5: Solve for x
   x = 79,505,259.78/7,721.80
6. Step 6: Final answer
   x = 10,296.21