Finding the Fourth Proportional to 6,340.69, 8,749.39 and 3,507.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,340.69 : 8,749.39 = 3,507.69 : x
2. Step 2: Convert to fraction form
   6,340.69/8,749.39 = 3,507.69/x
3. Step 3: Cross multiply
   6,340.69x = 8,749.39 × 3,507.69
4. Step 4: Simplify right side
   6,340.69x = 30,690,147.81
5. Step 5: Solve for x
   x = 30,690,147.81/6,340.69
6. Step 6: Final answer
   x = 4,840.19