Finding the Fourth Proportional to 10,440.63, 14,408.42 and 5,724.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.63 : 14,408.42 = 5,724.81 : x
2. Step 2: Convert to fraction form
   10,440.63/14,408.42 = 5,724.81/x
3. Step 3: Cross multiply
   10,440.63x = 14,408.42 × 5,724.81
4. Step 4: Simplify right side
   10,440.63x = 82,485,438.28
5. Step 5: Solve for x
   x = 82,485,438.28/10,440.63
6. Step 6: Final answer
   x = 7,900.43