Finding the Fourth Proportional to 6,404.52, 8,842.32 and 5,228.40

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404.52 : 8,842.32 = 5,228.40 : x
2. Step 2: Convert to fraction form
   6,404.52/8,842.32 = 5,228.40/x
3. Step 3: Cross multiply
   6,404.52x = 8,842.32 × 5,228.40
4. Step 4: Simplify right side
   6,404.52x = 46,231,185.89
5. Step 5: Solve for x
   x = 46,231,185.89/6,404.52
6. Step 6: Final answer
   x = 7,218.52