Finding the Fourth Proportional to 20,097.81, 30,142.61 and 7,613.53

Step by Step Solution

1. Step 1: Write the proportion equation
   20,097.81 : 30,142.61 = 7,613.53 : x
2. Step 2: Convert to fraction form
   20,097.81/30,142.61 = 7,613.53/x
3. Step 3: Cross multiply
   20,097.81x = 30,142.61 × 7,613.53
4. Step 4: Simplify right side
   20,097.81x = 229,491,665.51
5. Step 5: Solve for x
   x = 229,491,665.51/20,097.81
6. Step 6: Final answer
   x = 11,418.74