Finding the Fourth Proportional to 8,196.57, 12,290.29 and 3,809.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,196.57 : 12,290.29 = 3,809.81 : x
2. Step 2: Convert to fraction form
   8,196.57/12,290.29 = 3,809.81/x
3. Step 3: Cross multiply
   8,196.57x = 12,290.29 × 3,809.81
4. Step 4: Simplify right side
   8,196.57x = 46,823,669.74
5. Step 5: Solve for x
   x = 46,823,669.74/8,196.57
6. Step 6: Final answer
   x = 5,712.59