Finding the Fourth Proportional to 12,139.40, 16,752.76 and 7,104.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139.40 : 16,752.76 = 7,104.14 : x
2. Step 2: Convert to fraction form
   12,139.40/16,752.76 = 7,104.14/x
3. Step 3: Cross multiply
   12,139.40x = 16,752.76 × 7,104.14
4. Step 4: Simplify right side
   12,139.40x = 119,013,952.43
5. Step 5: Solve for x
   x = 119,013,952.43/12,139.40
6. Step 6: Final answer
   x = 9,803.94