Finding the Fourth Proportional to 20,185.62, 30,280.50 and 7,716.14

Step by Step Solution

1. Step 1: Write the proportion equation
   20,185.62 : 30,280.50 = 7,716.14 : x
2. Step 2: Convert to fraction form
   20,185.62/30,280.50 = 7,716.14/x
3. Step 3: Cross multiply
   20,185.62x = 30,280.50 × 7,716.14
4. Step 4: Simplify right side
   20,185.62x = 233,648,577.27
5. Step 5: Solve for x
   x = 233,648,577.27/20,185.62
6. Step 6: Final answer
   x = 11,575.00