Finding the Fourth Proportional to 6,571.74, 9,065.52 and 3,918.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,571.74 : 9,065.52 = 3,918.72 : x
2. Step 2: Convert to fraction form
   6,571.74/9,065.52 = 3,918.72/x
3. Step 3: Cross multiply
   6,571.74x = 9,065.52 × 3,918.72
4. Step 4: Simplify right side
   6,571.74x = 35,525,234.53
5. Step 5: Solve for x
   x = 35,525,234.53/6,571.74
6. Step 6: Final answer
   x = 5,405.76