Finding the Fourth Proportional to 13,609.83, 20,412.89 and 3,747.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,609.83 : 20,412.89 = 3,747.69 : x
2. Step 2: Convert to fraction form
   13,609.83/20,412.89 = 3,747.69/x
3. Step 3: Cross multiply
   13,609.83x = 20,412.89 × 3,747.69
4. Step 4: Simplify right side
   13,609.83x = 76,501,164.99
5. Step 5: Solve for x
   x = 76,501,164.99/13,609.83
6. Step 6: Final answer
   x = 5,621.02