Finding the Fourth Proportional to 8,331.69, 12,503.69 and 3,949.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,331.69 : 12,503.69 = 3,949.15 : x
2. Step 2: Convert to fraction form
   8,331.69/12,503.69 = 3,949.15/x
3. Step 3: Cross multiply
   8,331.69x = 12,503.69 × 3,949.15
4. Step 4: Simplify right side
   8,331.69x = 49,378,947.36
5. Step 5: Solve for x
   x = 49,378,947.36/8,331.69
6. Step 6: Final answer
   x = 5,926.64