Finding the Fourth Proportional to 6,513.57, 9,777.15 and 3,229.02

Step by Step Solution

1. Step 1: Write the proportion equation
   6,513.57 : 9,777.15 = 3,229.02 : x
2. Step 2: Convert to fraction form
   6,513.57/9,777.15 = 3,229.02/x
3. Step 3: Cross multiply
   6,513.57x = 9,777.15 × 3,229.02
4. Step 4: Simplify right side
   6,513.57x = 31,570,612.89
5. Step 5: Solve for x
   x = 31,570,612.89/6,513.57
6. Step 6: Final answer
   x = 4,846.90