Finding the Fourth Proportional to 12,786.42, 19,182.83 and 10,163.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,786.42 : 19,182.83 = 10,163.82 : x
2. Step 2: Convert to fraction form
   12,786.42/19,182.83 = 10,163.82/x
3. Step 3: Cross multiply
   12,786.42x = 19,182.83 × 10,163.82
4. Step 4: Simplify right side
   12,786.42x = 194,970,780.39
5. Step 5: Solve for x
   x = 194,970,780.39/12,786.42
6. Step 6: Final answer
   x = 15,248.27