Finding the Fourth Proportional to 10,434.57, 14,399.82 and 5,718.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.57 : 14,399.82 = 5,718.75 : x
2. Step 2: Convert to fraction form
   10,434.57/14,399.82 = 5,718.75/x
3. Step 3: Cross multiply
   10,434.57x = 14,399.82 × 5,718.75
4. Step 4: Simplify right side
   10,434.57x = 82,348,970.63
5. Step 5: Solve for x
   x = 82,348,970.63/10,434.57
6. Step 6: Final answer
   x = 7,891.94