Finding the Fourth Proportional to 8,431.29, 12,649.77 and 3,754.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,431.29 : 12,649.77 = 3,754.49 : x
2. Step 2: Convert to fraction form
   8,431.29/12,649.77 = 3,754.49/x
3. Step 3: Cross multiply
   8,431.29x = 12,649.77 × 3,754.49
4. Step 4: Simplify right side
   8,431.29x = 47,493,371.72
5. Step 5: Solve for x
   x = 47,493,371.72/8,431.29
6. Step 6: Final answer
   x = 5,632.99