Finding the Fourth Proportional to 6,419.35, 8,860.79 and 3,766.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,419.35 : 8,860.79 = 3,766.69 : x
2. Step 2: Convert to fraction form
   6,419.35/8,860.79 = 3,766.69/x
3. Step 3: Cross multiply
   6,419.35x = 8,860.79 × 3,766.69
4. Step 4: Simplify right side
   6,419.35x = 33,375,836.35
5. Step 5: Solve for x
   x = 33,375,836.35/6,419.35
6. Step 6: Final answer
   x = 5,199.26