Finding the Fourth Proportional to 3,814.85, 5,723.49 and 3,521.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,814.85 : 5,723.49 = 3,521.63 : x
2. Step 2: Convert to fraction form
   3,814.85/5,723.49 = 3,521.63/x
3. Step 3: Cross multiply
   3,814.85x = 5,723.49 × 3,521.63
4. Step 4: Simplify right side
   3,814.85x = 20,155,985.47
5. Step 5: Solve for x
   x = 20,155,985.47/3,814.85
6. Step 6: Final answer
   x = 5,283.57