Finding the Fourth Proportional to 8,500.38, 12,748.11 and 3,571.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,500.38 : 12,748.11 = 3,571.12 : x
2. Step 2: Convert to fraction form
   8,500.38/12,748.11 = 3,571.12/x
3. Step 3: Cross multiply
   8,500.38x = 12,748.11 × 3,571.12
4. Step 4: Simplify right side
   8,500.38x = 45,525,030.58
5. Step 5: Solve for x
   x = 45,525,030.58/8,500.38
6. Step 6: Final answer
   x = 5,355.65