Finding the Fourth Proportional to 6,406.56, 8,841.69 and 3,889.49

Step by Step Solution

1. Step 1: Write the proportion equation
   6,406.56 : 8,841.69 = 3,889.49 : x
2. Step 2: Convert to fraction form
   6,406.56/8,841.69 = 3,889.49/x
3. Step 3: Cross multiply
   6,406.56x = 8,841.69 × 3,889.49
4. Step 4: Simplify right side
   6,406.56x = 34,389,620.63
5. Step 5: Solve for x
   x = 34,389,620.63/6,406.56
6. Step 6: Final answer
   x = 5,367.88