Finding the Fourth Proportional to 10,721.78, 14,803.90 and 7,744.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,721.78 : 14,803.90 = 7,744.22 : x
2. Step 2: Convert to fraction form
   10,721.78/14,803.90 = 7,744.22/x
3. Step 3: Cross multiply
   10,721.78x = 14,803.90 × 7,744.22
4. Step 4: Simplify right side
   10,721.78x = 114,644,658.46
5. Step 5: Solve for x
   x = 114,644,658.46/10,721.78
6. Step 6: Final answer
   x = 10,692.69