Finding the Fourth Proportional to 8,313.09, 12,474.50 and 3,381.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,313.09 : 12,474.50 = 3,381.72 : x
2. Step 2: Convert to fraction form
   8,313.09/12,474.50 = 3,381.72/x
3. Step 3: Cross multiply
   8,313.09x = 12,474.50 × 3,381.72
4. Step 4: Simplify right side
   8,313.09x = 42,185,249.23
5. Step 5: Solve for x
   x = 42,185,249.23/8,313.09
6. Step 6: Final answer
   x = 5,074.56