Finding the Fourth Proportional to 11,689.78, 17,534.82 and 3,898.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,689.78 : 17,534.82 = 3,898.59 : x
2. Step 2: Convert to fraction form
   11,689.78/17,534.82 = 3,898.59/x
3. Step 3: Cross multiply
   11,689.78x = 17,534.82 × 3,898.59
4. Step 4: Simplify right side
   11,689.78x = 68,361,073.90
5. Step 5: Solve for x
   x = 68,361,073.90/11,689.78
6. Step 6: Final answer
   x = 5,847.94