Finding the Fourth Proportional to 6,404.56, 8,838.24 and 3,571.90

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404.56 : 8,838.24 = 3,571.90 : x
2. Step 2: Convert to fraction form
   6,404.56/8,838.24 = 3,571.90/x
3. Step 3: Cross multiply
   6,404.56x = 8,838.24 × 3,571.90
4. Step 4: Simplify right side
   6,404.56x = 31,569,309.46
5. Step 5: Solve for x
   x = 31,569,309.46/6,404.56
6. Step 6: Final answer
   x = 4,929.19