Finding the Fourth Proportional to 6,436.47, 8,883.71 and 3,919.41

Step by Step Solution

1. Step 1: Write the proportion equation
   6,436.47 : 8,883.71 = 3,919.41 : x
2. Step 2: Convert to fraction form
   6,436.47/8,883.71 = 3,919.41/x
3. Step 3: Cross multiply
   6,436.47x = 8,883.71 × 3,919.41
4. Step 4: Simplify right side
   6,436.47x = 34,818,907.94
5. Step 5: Solve for x
   x = 34,818,907.94/6,436.47
6. Step 6: Final answer
   x = 5,409.63