Finding the Fourth Proportional to 11,085.15, 16,627.86 and 3,689.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.15 : 16,627.86 = 3,689.61 : x
2. Step 2: Convert to fraction form
   11,085.15/16,627.86 = 3,689.61/x
3. Step 3: Cross multiply
   11,085.15x = 16,627.86 × 3,689.61
4. Step 4: Simplify right side
   11,085.15x = 61,350,318.53
5. Step 5: Solve for x
   x = 61,350,318.53/11,085.15
6. Step 6: Final answer
   x = 5,534.46