Finding the Fourth Proportional to 20,404.38, 30,602.98 and 5,609.73

Step by Step Solution

1. Step 1: Write the proportion equation
   20,404.38 : 30,602.98 = 5,609.73 : x
2. Step 2: Convert to fraction form
   20,404.38/30,602.98 = 5,609.73/x
3. Step 3: Cross multiply
   20,404.38x = 30,602.98 × 5,609.73
4. Step 4: Simplify right side
   20,404.38x = 171,674,455.00
5. Step 5: Solve for x
   x = 171,674,455.00/20,404.38
6. Step 6: Final answer
   x = 8,413.61