Finding the Fourth Proportional to 11,418.71, 17,129.12 and 3,098.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,418.71 : 17,129.12 = 3,098.79 : x
2. Step 2: Convert to fraction form
   11,418.71/17,129.12 = 3,098.79/x
3. Step 3: Cross multiply
   11,418.71x = 17,129.12 × 3,098.79
4. Step 4: Simplify right side
   11,418.71x = 53,079,530.27
5. Step 5: Solve for x
   x = 53,079,530.27/11,418.71
6. Step 6: Final answer
   x = 4,648.47