Finding the Fourth Proportional to 12,629.98, 18,920.76 and 7,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,629.98 : 18,920.76 = 7,066.50 : x
2. Step 2: Convert to fraction form
   12,629.98/18,920.76 = 7,066.50/x
3. Step 3: Cross multiply
   12,629.98x = 18,920.76 × 7,066.50
4. Step 4: Simplify right side
   12,629.98x = 133,703,550.54
5. Step 5: Solve for x
   x = 133,703,550.54/12,629.98
6. Step 6: Final answer
   x = 10,586.20