Finding the Fourth Proportional to 6,513.59, 9,771.59 and 2,131.29

Step by Step Solution

1. Step 1: Write the proportion equation
   6,513.59 : 9,771.59 = 2,131.29 : x
2. Step 2: Convert to fraction form
   6,513.59/9,771.59 = 2,131.29/x
3. Step 3: Cross multiply
   6,513.59x = 9,771.59 × 2,131.29
4. Step 4: Simplify right side
   6,513.59x = 20,826,081.39
5. Step 5: Solve for x
   x = 20,826,081.39/6,513.59
6. Step 6: Final answer
   x = 3,197.33