Finding the Fourth Proportional to 12,727.06, 17,563.50 and 7,690.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,727.06 : 17,563.50 = 7,690.56 : x
2. Step 2: Convert to fraction form
   12,727.06/17,563.50 = 7,690.56/x
3. Step 3: Cross multiply
   12,727.06x = 17,563.50 × 7,690.56
4. Step 4: Simplify right side
   12,727.06x = 135,073,150.56
5. Step 5: Solve for x
   x = 135,073,150.56/12,727.06
6. Step 6: Final answer
   x = 10,613.07