Finding the Fourth Proportional to 6,469.50, 9,705.42 and 4,280.04

Step by Step Solution

1. Step 1: Write the proportion equation
   6,469.50 : 9,705.42 = 4,280.04 : x
2. Step 2: Convert to fraction form
   6,469.50/9,705.42 = 4,280.04/x
3. Step 3: Cross multiply
   6,469.50x = 9,705.42 × 4,280.04
4. Step 4: Simplify right side
   6,469.50x = 41,539,585.82
5. Step 5: Solve for x
   x = 41,539,585.82/6,469.50
6. Step 6: Final answer
   x = 6,420.83