Finding the Fourth Proportional to 6,420.52, 8,860.72 and 3,766.96

Step by Step Solution

1. Step 1: Write the proportion equation
   6,420.52 : 8,860.72 = 3,766.96 : x
2. Step 2: Convert to fraction form
   6,420.52/8,860.72 = 3,766.96/x
3. Step 3: Cross multiply
   6,420.52x = 8,860.72 × 3,766.96
4. Step 4: Simplify right side
   6,420.52x = 33,377,977.81
5. Step 5: Solve for x
   x = 33,377,977.81/6,420.52
6. Step 6: Final answer
   x = 5,198.64