Finding the Fourth Proportional to 3,800.94, 5,729.43 and 3,485.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,800.94 : 5,729.43 = 3,485.02 : x
2. Step 2: Convert to fraction form
   3,800.94/5,729.43 = 3,485.02/x
3. Step 3: Cross multiply
   3,800.94x = 5,729.43 × 3,485.02
4. Step 4: Simplify right side
   3,800.94x = 19,967,161.54
5. Step 5: Solve for x
   x = 19,967,161.54/3,800.94
6. Step 6: Final answer
   x = 5,253.22