Finding the Fourth Proportional to 10,721.71, 16,086.35 and 3,328.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,721.71 : 16,086.35 = 3,328.03 : x
2. Step 2: Convert to fraction form
   10,721.71/16,086.35 = 3,328.03/x
3. Step 3: Cross multiply
   10,721.71x = 16,086.35 × 3,328.03
4. Step 4: Simplify right side
   10,721.71x = 53,535,855.39
5. Step 5: Solve for x
   x = 53,535,855.39/10,721.71
6. Step 6: Final answer
   x = 4,993.22