Finding the Fourth Proportional to 12,289.15, 16,958.55 and 7,253.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,289.15 : 16,958.55 = 7,253.56 : x
2. Step 2: Convert to fraction form
   12,289.15/16,958.55 = 7,253.56/x
3. Step 3: Cross multiply
   12,289.15x = 16,958.55 × 7,253.56
4. Step 4: Simplify right side
   12,289.15x = 123,009,859.94
5. Step 5: Solve for x
   x = 123,009,859.94/12,289.15
6. Step 6: Final answer
   x = 10,009.63