Finding the Fourth Proportional to 10,439.20, 14,406.06 and 5,723.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.20 : 14,406.06 = 5,723.50 : x
2. Step 2: Convert to fraction form
   10,439.20/14,406.06 = 5,723.50/x
3. Step 3: Cross multiply
   10,439.20x = 14,406.06 × 5,723.50
4. Step 4: Simplify right side
   10,439.20x = 82,453,084.41
5. Step 5: Solve for x
   x = 82,453,084.41/10,439.20
6. Step 6: Final answer
   x = 7,898.41