Finding the Fourth Proportional to 6,391.31, 9,591.62 and 3,620.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,391.31 : 9,591.62 = 3,620.30 : x
2. Step 2: Convert to fraction form
   6,391.31/9,591.62 = 3,620.30/x
3. Step 3: Cross multiply
   6,391.31x = 9,591.62 × 3,620.30
4. Step 4: Simplify right side
   6,391.31x = 34,724,475.83
5. Step 5: Solve for x
   x = 34,724,475.83/6,391.31
6. Step 6: Final answer
   x = 5,433.08