Finding the Fourth Proportional to 12,315.04, 16,993.73 and 7,279.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.04 : 16,993.73 = 7,279.47 : x
2. Step 2: Convert to fraction form
   12,315.04/16,993.73 = 7,279.47/x
3. Step 3: Cross multiply
   12,315.04x = 16,993.73 × 7,279.47
4. Step 4: Simplify right side
   12,315.04x = 123,705,365.92
5. Step 5: Solve for x
   x = 123,705,365.92/12,315.04
6. Step 6: Final answer
   x = 10,045.07