Finding the Fourth Proportional to 8,456.39, 11,669.02 and 5,725.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,456.39 : 11,669.02 = 5,725.37 : x
2. Step 2: Convert to fraction form
   8,456.39/11,669.02 = 5,725.37/x
3. Step 3: Cross multiply
   8,456.39x = 11,669.02 × 5,725.37
4. Step 4: Simplify right side
   8,456.39x = 66,809,398.69
5. Step 5: Solve for x
   x = 66,809,398.69/8,456.39
6. Step 6: Final answer
   x = 7,900.47