Finding the Fourth Proportional to 12,758.06, 17,614.72 and 11,409.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,758.06 : 17,614.72 = 11,409.49 : x
2. Step 2: Convert to fraction form
   12,758.06/17,614.72 = 11,409.49/x
3. Step 3: Cross multiply
   12,758.06x = 17,614.72 × 11,409.49
4. Step 4: Simplify right side
   12,758.06x = 200,974,971.69
5. Step 5: Solve for x
   x = 200,974,971.69/12,758.06
6. Step 6: Final answer
   x = 15,752.78