Finding the Fourth Proportional to 6,485.78, 8,950.83 and 3,691.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,485.78 : 8,950.83 = 3,691.28 : x
2. Step 2: Convert to fraction form
   6,485.78/8,950.83 = 3,691.28/x
3. Step 3: Cross multiply
   6,485.78x = 8,950.83 × 3,691.28
4. Step 4: Simplify right side
   6,485.78x = 33,040,019.76
5. Step 5: Solve for x
   x = 33,040,019.76/6,485.78
6. Step 6: Final answer
   x = 5,094.22