Finding the Fourth Proportional to 12,450.06, 17,179.38 and 7,144.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,450.06 : 17,179.38 = 7,144.02 : x
2. Step 2: Convert to fraction form
   12,450.06/17,179.38 = 7,144.02/x
3. Step 3: Cross multiply
   12,450.06x = 17,179.38 × 7,144.02
4. Step 4: Simplify right side
   12,450.06x = 122,729,834.31
5. Step 5: Solve for x
   x = 122,729,834.31/12,450.06
6. Step 6: Final answer
   x = 9,857.77