Finding the Fourth Proportional to 10,434.15, 14,398.16 and 5,718.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.15 : 14,398.16 = 5,718.51 : x
2. Step 2: Convert to fraction form
   10,434.15/14,398.16 = 5,718.51/x
3. Step 3: Cross multiply
   10,434.15x = 14,398.16 × 5,718.51
4. Step 4: Simplify right side
   10,434.15x = 82,335,993.35
5. Step 5: Solve for x
   x = 82,335,993.35/10,434.15
6. Step 6: Final answer
   x = 7,891.01