Finding the Fourth Proportional to 8,483.97, 12,723.90 and 3,557.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,483.97 : 12,723.90 = 3,557.30 : x
2. Step 2: Convert to fraction form
   8,483.97/12,723.90 = 3,557.30/x
3. Step 3: Cross multiply
   8,483.97x = 12,723.90 × 3,557.30
4. Step 4: Simplify right side
   8,483.97x = 45,262,665.85
5. Step 5: Solve for x
   x = 45,262,665.85/8,483.97
6. Step 6: Final answer
   x = 5,335.08