Finding the Fourth Proportional to 10,142.10, 15,183.45 and 7,226.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,142.10 : 15,183.45 = 7,226.10 : x
2. Step 2: Convert to fraction form
   10,142.10/15,183.45 = 7,226.10/x
3. Step 3: Cross multiply
   10,142.10x = 15,183.45 × 7,226.10
4. Step 4: Simplify right side
   10,142.10x = 109,717,128.05
5. Step 5: Solve for x
   x = 109,717,128.05/10,142.10
6. Step 6: Final answer
   x = 10,817.99