Finding the Fourth Proportional to 3,998.46, 5,967.15 and 3,561.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998.46 : 5,967.15 = 3,561.06 : x
2. Step 2: Convert to fraction form
   3,998.46/5,967.15 = 3,561.06/x
3. Step 3: Cross multiply
   3,998.46x = 5,967.15 × 3,561.06
4. Step 4: Simplify right side
   3,998.46x = 21,249,379.18
5. Step 5: Solve for x
   x = 21,249,379.18/3,998.46
6. Step 6: Final answer
   x = 5,314.39