Finding the Fourth Proportional to 12,342.16, 18,431.72 and 10,568.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,342.16 : 18,431.72 = 10,568.56 : x
2. Step 2: Convert to fraction form
   12,342.16/18,431.72 = 10,568.56/x
3. Step 3: Cross multiply
   12,342.16x = 18,431.72 × 10,568.56
4. Step 4: Simplify right side
   12,342.16x = 194,796,738.72
5. Step 5: Solve for x
   x = 194,796,738.72/12,342.16
6. Step 6: Final answer
   x = 15,783.03