Finding the Fourth Proportional to 7,146.48, 10,721.52 and 2,216.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,146.48 : 10,721.52 = 2,216.16 : x
2. Step 2: Convert to fraction form
   7,146.48/10,721.52 = 2,216.16/x
3. Step 3: Cross multiply
   7,146.48x = 10,721.52 × 2,216.16
4. Step 4: Simplify right side
   7,146.48x = 23,760,603.76
5. Step 5: Solve for x
   x = 23,760,603.76/7,146.48
6. Step 6: Final answer
   x = 3,324.80