Finding the Fourth Proportional to 10,434.49, 14,399.58 and 5,718.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.49 : 14,399.58 = 5,718.76 : x
2. Step 2: Convert to fraction form
   10,434.49/14,399.58 = 5,718.76/x
3. Step 3: Cross multiply
   10,434.49x = 14,399.58 × 5,718.76
4. Step 4: Simplify right side
   10,434.49x = 82,347,742.12
5. Step 5: Solve for x
   x = 82,347,742.12/10,434.49
6. Step 6: Final answer
   x = 7,891.88