Finding the Fourth Proportional to 12,473.40, 17,216.76 and 7,169.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,473.40 : 17,216.76 = 7,169.92 : x
2. Step 2: Convert to fraction form
   12,473.40/17,216.76 = 7,169.92/x
3. Step 3: Cross multiply
   12,473.40x = 17,216.76 × 7,169.92
4. Step 4: Simplify right side
   12,473.40x = 123,442,791.86
5. Step 5: Solve for x
   x = 123,442,791.86/12,473.40
6. Step 6: Final answer
   x = 9,896.48