Finding the Fourth Proportional to 12,662.83, 17,475.31 and 7,628.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,662.83 : 17,475.31 = 7,628.61 : x
2. Step 2: Convert to fraction form
   12,662.83/17,475.31 = 7,628.61/x
3. Step 3: Cross multiply
   12,662.83x = 17,475.31 × 7,628.61
4. Step 4: Simplify right side
   12,662.83x = 133,312,399.69
5. Step 5: Solve for x
   x = 133,312,399.69/12,662.83
6. Step 6: Final answer
   x = 10,527.85