Finding the Fourth Proportional to 12,786.12, 17,649.90 and 9,014.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,786.12 : 17,649.90 = 9,014.76 : x
2. Step 2: Convert to fraction form
   12,786.12/17,649.90 = 9,014.76/x
3. Step 3: Cross multiply
   12,786.12x = 17,649.90 × 9,014.76
4. Step 4: Simplify right side
   12,786.12x = 159,109,612.52
5. Step 5: Solve for x
   x = 159,109,612.52/12,786.12
6. Step 6: Final answer
   x = 12,443.93