Finding the Fourth Proportional to 10,434, 14,399.06 and 5,718.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434 : 14,399.06 = 5,718.45 : x
2. Step 2: Convert to fraction form
   10,434/14,399.06 = 5,718.45/x
3. Step 3: Cross multiply
   10,434x = 14,399.06 × 5,718.45
4. Step 4: Simplify right side
   10,434x = 82,340,276.06
5. Step 5: Solve for x
   x = 82,340,276.06/10,434
6. Step 6: Final answer
   x = 7,891.53