Finding the Fourth Proportional to 12,902.72, 17,766 and 11,300.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,902.72 : 17,766 = 11,300.12 : x
2. Step 2: Convert to fraction form
   12,902.72/17,766 = 11,300.12/x
3. Step 3: Cross multiply
   12,902.72x = 17,766 × 11,300.12
4. Step 4: Simplify right side
   12,902.72x = 200,757,931.92
5. Step 5: Solve for x
   x = 200,757,931.92/12,902.72
6. Step 6: Final answer
   x = 15,559.35