Finding the Fourth Proportional to 10,439.47, 14,406.45 and 5,724.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.47 : 14,406.45 = 5,724.06 : x
2. Step 2: Convert to fraction form
   10,439.47/14,406.45 = 5,724.06/x
3. Step 3: Cross multiply
   10,439.47x = 14,406.45 × 5,724.06
4. Step 4: Simplify right side
   10,439.47x = 82,463,312.15
5. Step 5: Solve for x
   x = 82,463,312.15/10,439.47
6. Step 6: Final answer
   x = 7,899.19