Finding the Fourth Proportional to 6,665.30, 9,983.55 and 5,513.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,665.30 : 9,983.55 = 5,513.30 : x
2. Step 2: Convert to fraction form
   6,665.30/9,983.55 = 5,513.30/x
3. Step 3: Cross multiply
   6,665.30x = 9,983.55 × 5,513.30
4. Step 4: Simplify right side
   6,665.30x = 55,042,306.22
5. Step 5: Solve for x
   x = 55,042,306.22/6,665.30
6. Step 6: Final answer
   x = 8,258.04