Finding the Fourth Proportional to 3,635.91, 5,447.79 and 3,499.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,635.91 : 5,447.79 = 3,499.25 : x
2. Step 2: Convert to fraction form
   3,635.91/5,447.79 = 3,499.25/x
3. Step 3: Cross multiply
   3,635.91x = 5,447.79 × 3,499.25
4. Step 4: Simplify right side
   3,635.91x = 19,063,151.92
5. Step 5: Solve for x
   x = 19,063,151.92/3,635.91
6. Step 6: Final answer
   x = 5,243.02