Finding the Fourth Proportional to 10,439.28, 14,406.20 and 5,723.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.28 : 14,406.20 = 5,723.87 : x
2. Step 2: Convert to fraction form
   10,439.28/14,406.20 = 5,723.87/x
3. Step 3: Cross multiply
   10,439.28x = 14,406.20 × 5,723.87
4. Step 4: Simplify right side
   10,439.28x = 82,459,115.34
5. Step 5: Solve for x
   x = 82,459,115.34/10,439.28
6. Step 6: Final answer
   x = 7,898.93