Finding the Fourth Proportional to 8,320.37, 12,469.78 and 3,384.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.37 : 12,469.78 = 3,384.27 : x
2. Step 2: Convert to fraction form
   8,320.37/12,469.78 = 3,384.27/x
3. Step 3: Cross multiply
   8,320.37x = 12,469.78 × 3,384.27
4. Step 4: Simplify right side
   8,320.37x = 42,201,085.44
5. Step 5: Solve for x
   x = 42,201,085.44/8,320.37
6. Step 6: Final answer
   x = 5,072.02