Finding the Fourth Proportional to 6,379.86, 8,804 and 3,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,379.86 : 8,804 = 3,728.72 : x
2. Step 2: Convert to fraction form
   6,379.86/8,804 = 3,728.72/x
3. Step 3: Cross multiply
   6,379.86x = 8,804 × 3,728.72
4. Step 4: Simplify right side
   6,379.86x = 32,827,650.88
5. Step 5: Solve for x
   x = 32,827,650.88/6,379.86
6. Step 6: Final answer
   x = 5,145.51