Finding the Fourth Proportional to 12,256.29, 16,929.18 and 10,659.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,256.29 : 16,929.18 = 10,659.78 : x
2. Step 2: Convert to fraction form
   12,256.29/16,929.18 = 10,659.78/x
3. Step 3: Cross multiply
   12,256.29x = 16,929.18 × 10,659.78
4. Step 4: Simplify right side
   12,256.29x = 180,461,334.38
5. Step 5: Solve for x
   x = 180,461,334.38/12,256.29
6. Step 6: Final answer
   x = 14,723.98