Finding the Fourth Proportional to 6,404.28, 8,837.78 and 3,571.58

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404.28 : 8,837.78 = 3,571.58 : x
2. Step 2: Convert to fraction form
   6,404.28/8,837.78 = 3,571.58/x
3. Step 3: Cross multiply
   6,404.28x = 8,837.78 × 3,571.58
4. Step 4: Simplify right side
   6,404.28x = 31,564,838.29
5. Step 5: Solve for x
   x = 31,564,838.29/6,404.28
6. Step 6: Final answer
   x = 4,928.71