Finding the Fourth Proportional to 10,434.01, 14,398.90 and 5,718.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.01 : 14,398.90 = 5,718.25 : x
2. Step 2: Convert to fraction form
   10,434.01/14,398.90 = 5,718.25/x
3. Step 3: Cross multiply
   10,434.01x = 14,398.90 × 5,718.25
4. Step 4: Simplify right side
   10,434.01x = 82,336,481.33
5. Step 5: Solve for x
   x = 82,336,481.33/10,434.01
6. Step 6: Final answer
   x = 7,891.17