Finding the Fourth Proportional to 8,285.39, 12,420.72 and 3,019.41

Step by Step Solution

1. Step 1: Write the proportion equation
   8,285.39 : 12,420.72 = 3,019.41 : x
2. Step 2: Convert to fraction form
   8,285.39/12,420.72 = 3,019.41/x
3. Step 3: Cross multiply
   8,285.39x = 12,420.72 × 3,019.41
4. Step 4: Simplify right side
   8,285.39x = 37,503,302.82
5. Step 5: Solve for x
   x = 37,503,302.82/8,285.39
6. Step 6: Final answer
   x = 4,526.44