Finding the Fourth Proportional to 3,998.47, 5,518.56 and 2,321.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998.47 : 5,518.56 = 2,321.27 : x
2. Step 2: Convert to fraction form
   3,998.47/5,518.56 = 2,321.27/x
3. Step 3: Cross multiply
   3,998.47x = 5,518.56 × 2,321.27
4. Step 4: Simplify right side
   3,998.47x = 12,810,056.16
5. Step 5: Solve for x
   x = 12,810,056.16/3,998.47
6. Step 6: Final answer
   x = 3,203.74