Finding the Fourth Proportional to 6,459.40, 8,915.67 and 3,808.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,459.40 : 8,915.67 = 3,808.57 : x
2. Step 2: Convert to fraction form
   6,459.40/8,915.67 = 3,808.57/x
3. Step 3: Cross multiply
   6,459.40x = 8,915.67 × 3,808.57
4. Step 4: Simplify right side
   6,459.40x = 33,955,947.72
5. Step 5: Solve for x
   x = 33,955,947.72/6,459.40
6. Step 6: Final answer
   x = 5,256.83