Finding the Fourth Proportional to 20,404.82, 30,607.62 and 5,613.68

Step by Step Solution

1. Step 1: Write the proportion equation
   20,404.82 : 30,607.62 = 5,613.68 : x
2. Step 2: Convert to fraction form
   20,404.82/30,607.62 = 5,613.68/x
3. Step 3: Cross multiply
   20,404.82x = 30,607.62 × 5,613.68
4. Step 4: Simplify right side
   20,404.82x = 171,821,384.24
5. Step 5: Solve for x
   x = 171,821,384.24/20,404.82
6. Step 6: Final answer
   x = 8,420.63