Finding the Fourth Proportional to 11,718.18, 17,578.17 and 3,398.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,718.18 : 17,578.17 = 3,398.31 : x
2. Step 2: Convert to fraction form
   11,718.18/17,578.17 = 3,398.31/x
3. Step 3: Cross multiply
   11,718.18x = 17,578.17 × 3,398.31
4. Step 4: Simplify right side
   11,718.18x = 59,736,070.89
5. Step 5: Solve for x
   x = 59,736,070.89/11,718.18
6. Step 6: Final answer
   x = 5,097.73