Finding the Fourth Proportional to 11,721.12, 16,171.92 and 7,003.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,721.12 : 16,171.92 = 7,003.68 : x
2. Step 2: Convert to fraction form
   11,721.12/16,171.92 = 7,003.68/x
3. Step 3: Cross multiply
   11,721.12x = 16,171.92 × 7,003.68
4. Step 4: Simplify right side
   11,721.12x = 113,262,952.67
5. Step 5: Solve for x
   x = 113,262,952.67/11,721.12
6. Step 6: Final answer
   x = 9,663.15