Finding the Fourth Proportional to 6,386.80, 8,813.69 and 3,592.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,386.80 : 8,813.69 = 3,592.30 : x
2. Step 2: Convert to fraction form
   6,386.80/8,813.69 = 3,592.30/x
3. Step 3: Cross multiply
   6,386.80x = 8,813.69 × 3,592.30
4. Step 4: Simplify right side
   6,386.80x = 31,661,418.59
5. Step 5: Solve for x
   x = 31,661,418.59/6,386.80
6. Step 6: Final answer
   x = 4,957.32