Finding the Fourth Proportional to 5,605.86, 8,399.52 and 2,829.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,605.86 : 8,399.52 = 2,829.72 : x
2. Step 2: Convert to fraction form
   5,605.86/8,399.52 = 2,829.72/x
3. Step 3: Cross multiply
   5,605.86x = 8,399.52 × 2,829.72
4. Step 4: Simplify right side
   5,605.86x = 23,768,289.73
5. Step 5: Solve for x
   x = 23,768,289.73/5,605.86
6. Step 6: Final answer
   x = 4,239.90