Finding the Fourth Proportional to 6,333.78, 8,740.62 and 3,815.99

Step by Step Solution

1. Step 1: Write the proportion equation
   6,333.78 : 8,740.62 = 3,815.99 : x
2. Step 2: Convert to fraction form
   6,333.78/8,740.62 = 3,815.99/x
3. Step 3: Cross multiply
   6,333.78x = 8,740.62 × 3,815.99
4. Step 4: Simplify right side
   6,333.78x = 33,354,099.43
5. Step 5: Solve for x
   x = 33,354,099.43/6,333.78
6. Step 6: Final answer
   x = 5,266.07