Finding the Fourth Proportional to 11,818.82, 17,728.19 and 3,498.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,818.82 : 17,728.19 = 3,498.89 : x
2. Step 2: Convert to fraction form
   11,818.82/17,728.19 = 3,498.89/x
3. Step 3: Cross multiply
   11,818.82x = 17,728.19 × 3,498.89
4. Step 4: Simplify right side
   11,818.82x = 62,028,880.57
5. Step 5: Solve for x
   x = 62,028,880.57/11,818.82
6. Step 6: Final answer
   x = 5,248.32