Finding the Fourth Proportional to 12,321.69, 17,002.62 and 7,286.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.69 : 17,002.62 = 7,286.10 : x
2. Step 2: Convert to fraction form
   12,321.69/17,002.62 = 7,286.10/x
3. Step 3: Cross multiply
   12,321.69x = 17,002.62 × 7,286.10
4. Step 4: Simplify right side
   12,321.69x = 123,882,789.58
5. Step 5: Solve for x
   x = 123,882,789.58/12,321.69
6. Step 6: Final answer
   x = 10,054.04