Finding the Fourth Proportional to 8,017.79, 12,018.17 and 3,629.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,017.79 : 12,018.17 = 3,629.21 : x
2. Step 2: Convert to fraction form
   8,017.79/12,018.17 = 3,629.21/x
3. Step 3: Cross multiply
   8,017.79x = 12,018.17 × 3,629.21
4. Step 4: Simplify right side
   8,017.79x = 43,616,411.73
5. Step 5: Solve for x
   x = 43,616,411.73/8,017.79
6. Step 6: Final answer
   x = 5,439.96