Finding the Fourth Proportional to 3,639.23, 5,055.82 and 3,605.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639.23 : 5,055.82 = 3,605.01 : x
2. Step 2: Convert to fraction form
   3,639.23/5,055.82 = 3,605.01/x
3. Step 3: Cross multiply
   3,639.23x = 5,055.82 × 3,605.01
4. Step 4: Simplify right side
   3,639.23x = 18,226,253.69
5. Step 5: Solve for x
   x = 18,226,253.69/3,639.23
6. Step 6: Final answer
   x = 5,008.27