Finding the Fourth Proportional to 10,439.70, 14,406.72 and 5,724

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.70 : 14,406.72 = 5,724 : x
2. Step 2: Convert to fraction form
   10,439.70/14,406.72 = 5,724/x
3. Step 3: Cross multiply
   10,439.70x = 14,406.72 × 5,724
4. Step 4: Simplify right side
   10,439.70x = 82,464,065.28
5. Step 5: Solve for x
   x = 82,464,065.28/10,439.70
6. Step 6: Final answer
   x = 7,899.08