Finding the Fourth Proportional to 13,243.16, 18,276.83 and 7,576.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,243.16 : 18,276.83 = 7,576.78 : x
2. Step 2: Convert to fraction form
   13,243.16/18,276.83 = 7,576.78/x
3. Step 3: Cross multiply
   13,243.16x = 18,276.83 × 7,576.78
4. Step 4: Simplify right side
   13,243.16x = 138,479,520.01
5. Step 5: Solve for x
   x = 138,479,520.01/13,243.16
6. Step 6: Final answer
   x = 10,456.68