Finding the Fourth Proportional to 10,439.36, 14,406.37 and 5,659.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.36 : 14,406.37 = 5,659.39 : x
2. Step 2: Convert to fraction form
   10,439.36/14,406.37 = 5,659.39/x
3. Step 3: Cross multiply
   10,439.36x = 14,406.37 × 5,659.39
4. Step 4: Simplify right side
   10,439.36x = 81,531,216.15
5. Step 5: Solve for x
   x = 81,531,216.15/10,439.36
6. Step 6: Final answer
   x = 7,809.98