Finding the Fourth Proportional to 12,581.16, 18,874.56 and 3,696.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,581.16 : 18,874.56 = 3,696.72 : x
2. Step 2: Convert to fraction form
   12,581.16/18,874.56 = 3,696.72/x
3. Step 3: Cross multiply
   12,581.16x = 18,874.56 × 3,696.72
4. Step 4: Simplify right side
   12,581.16x = 69,773,963.44
5. Step 5: Solve for x
   x = 69,773,963.44/12,581.16
6. Step 6: Final answer
   x = 5,545.91