Finding the Fourth Proportional to 6,419.33, 8,853.57 and 3,901.38

Step by Step Solution

1. Step 1: Write the proportion equation
   6,419.33 : 8,853.57 = 3,901.38 : x
2. Step 2: Convert to fraction form
   6,419.33/8,853.57 = 3,901.38/x
3. Step 3: Cross multiply
   6,419.33x = 8,853.57 × 3,901.38
4. Step 4: Simplify right side
   6,419.33x = 34,541,140.93
5. Step 5: Solve for x
   x = 34,541,140.93/6,419.33
6. Step 6: Final answer
   x = 5,380.81