Finding the Fourth Proportional to 6,470.50, 9,699.02 and 4,390.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,470.50 : 9,699.02 = 4,390.69 : x
2. Step 2: Convert to fraction form
   6,470.50/9,699.02 = 4,390.69/x
3. Step 3: Cross multiply
   6,470.50x = 9,699.02 × 4,390.69
4. Step 4: Simplify right side
   6,470.50x = 42,585,390.12
5. Step 5: Solve for x
   x = 42,585,390.12/6,470.50
6. Step 6: Final answer
   x = 6,581.47