Finding the Fourth Proportional to 12,496.40, 18,741.83 and 3,609.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,496.40 : 18,741.83 = 3,609.79 : x
2. Step 2: Convert to fraction form
   12,496.40/18,741.83 = 3,609.79/x
3. Step 3: Cross multiply
   12,496.40x = 18,741.83 × 3,609.79
4. Step 4: Simplify right side
   12,496.40x = 67,654,075.89
5. Step 5: Solve for x
   x = 67,654,075.89/12,496.40
6. Step 6: Final answer
   x = 5,413.89