Finding the Fourth Proportional to 8,355.65, 12,533.41 and 3,425.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,355.65 : 12,533.41 = 3,425.28 : x
2. Step 2: Convert to fraction form
   8,355.65/12,533.41 = 3,425.28/x
3. Step 3: Cross multiply
   8,355.65x = 12,533.41 × 3,425.28
4. Step 4: Simplify right side
   8,355.65x = 42,930,395.89
5. Step 5: Solve for x
   x = 42,930,395.89/8,355.65
6. Step 6: Final answer
   x = 5,137.89