Finding the Fourth Proportional to 10,439.60, 14,405.99 and 5,723.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.60 : 14,405.99 = 5,723.91 : x
2. Step 2: Convert to fraction form
   10,439.60/14,405.99 = 5,723.91/x
3. Step 3: Cross multiply
   10,439.60x = 14,405.99 × 5,723.91
4. Step 4: Simplify right side
   10,439.60x = 82,458,561.60
5. Step 5: Solve for x
   x = 82,458,561.60/10,439.60
6. Step 6: Final answer
   x = 7,898.64