Finding the Fourth Proportional to 12,673.40, 17,489.72 and 7,369.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,673.40 : 17,489.72 = 7,369.92 : x
2. Step 2: Convert to fraction form
   12,673.40/17,489.72 = 7,369.92/x
3. Step 3: Cross multiply
   12,673.40x = 17,489.72 × 7,369.92
4. Step 4: Simplify right side
   12,673.40x = 128,897,855.65
5. Step 5: Solve for x
   x = 128,897,855.65/12,673.40
6. Step 6: Final answer
   x = 10,170.74