Finding the Fourth Proportional to 12,116.16, 16,717.32 and 7,398.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,116.16 : 16,717.32 = 7,398.72 : x
2. Step 2: Convert to fraction form
   12,116.16/16,717.32 = 7,398.72/x
3. Step 3: Cross multiply
   12,116.16x = 16,717.32 × 7,398.72
4. Step 4: Simplify right side
   12,116.16x = 123,686,769.83
5. Step 5: Solve for x
   x = 123,686,769.83/12,116.16
6. Step 6: Final answer
   x = 10,208.41