Finding the Fourth Proportional to 8,362.20, 12,541.86 and 3,920.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,362.20 : 12,541.86 = 3,920.34 : x
2. Step 2: Convert to fraction form
   8,362.20/12,541.86 = 3,920.34/x
3. Step 3: Cross multiply
   8,362.20x = 12,541.86 × 3,920.34
4. Step 4: Simplify right side
   8,362.20x = 49,168,355.43
5. Step 5: Solve for x
   x = 49,168,355.43/8,362.20
6. Step 6: Final answer
   x = 5,879.83