Finding the Fourth Proportional to 10,429.93, 15,643.67 and 4,189.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,429.93 : 15,643.67 = 4,189.69 : x
2. Step 2: Convert to fraction form
   10,429.93/15,643.67 = 4,189.69/x
3. Step 3: Cross multiply
   10,429.93x = 15,643.67 × 4,189.69
4. Step 4: Simplify right side
   10,429.93x = 65,542,049.54
5. Step 5: Solve for x
   x = 65,542,049.54/10,429.93
6. Step 6: Final answer
   x = 6,284.04