Finding the Fourth Proportional to 11,085.62, 16,589.52 and 8,604.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.62 : 16,589.52 = 8,604.62 : x
2. Step 2: Convert to fraction form
   11,085.62/16,589.52 = 8,604.62/x
3. Step 3: Cross multiply
   11,085.62x = 16,589.52 × 8,604.62
4. Step 4: Simplify right side
   11,085.62x = 142,746,515.58
5. Step 5: Solve for x
   x = 142,746,515.58/11,085.62
6. Step 6: Final answer
   x = 12,876.73