Finding the Fourth Proportional to 12,669.40, 17,483.79 and 7,080.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,669.40 : 17,483.79 = 7,080.40 : x
2. Step 2: Convert to fraction form
   12,669.40/17,483.79 = 7,080.40/x
3. Step 3: Cross multiply
   12,669.40x = 17,483.79 × 7,080.40
4. Step 4: Simplify right side
   12,669.40x = 123,792,103.90
5. Step 5: Solve for x
   x = 123,792,103.90/12,669.40
6. Step 6: Final answer
   x = 9,770.96