Finding the Fourth Proportional to 12,776.27, 17,629.16 and 7,396.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,776.27 : 17,629.16 = 7,396.79 : x
2. Step 2: Convert to fraction form
   12,776.27/17,629.16 = 7,396.79/x
3. Step 3: Cross multiply
   12,776.27x = 17,629.16 × 7,396.79
4. Step 4: Simplify right side
   12,776.27x = 130,399,069.27
5. Step 5: Solve for x
   x = 130,399,069.27/12,776.27
6. Step 6: Final answer
   x = 10,206.35