Finding the Fourth Proportional to 8,521.74, 12,771.27 and 3,585.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,521.74 : 12,771.27 = 3,585.42 : x
2. Step 2: Convert to fraction form
   8,521.74/12,771.27 = 3,585.42/x
3. Step 3: Cross multiply
   8,521.74x = 12,771.27 × 3,585.42
4. Step 4: Simplify right side
   8,521.74x = 45,790,366.88
5. Step 5: Solve for x
   x = 45,790,366.88/8,521.74
6. Step 6: Final answer
   x = 5,373.36