Finding the Fourth Proportional to 6,448.85, 9,671.72 and 4,105.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,448.85 : 9,671.72 = 4,105.34 : x
2. Step 2: Convert to fraction form
   6,448.85/9,671.72 = 4,105.34/x
3. Step 3: Cross multiply
   6,448.85x = 9,671.72 × 4,105.34
4. Step 4: Simplify right side
   6,448.85x = 39,705,630.10
5. Step 5: Solve for x
   x = 39,705,630.10/6,448.85
6. Step 6: Final answer
   x = 6,157.01