Finding the Fourth Proportional to 3,969.47, 5,475.53 and 3,300.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.47 : 5,475.53 = 3,300.55 : x
2. Step 2: Convert to fraction form
   3,969.47/5,475.53 = 3,300.55/x
3. Step 3: Cross multiply
   3,969.47x = 5,475.53 × 3,300.55
4. Step 4: Simplify right side
   3,969.47x = 18,072,255.10
5. Step 5: Solve for x
   x = 18,072,255.10/3,969.47
6. Step 6: Final answer
   x = 4,552.81