Finding the Fourth Proportional to 12,608.72, 18,916.13 and 3,843.11

Step by Step Solution

1. Step 1: Write the proportion equation
   12,608.72 : 18,916.13 = 3,843.11 : x
2. Step 2: Convert to fraction form
   12,608.72/18,916.13 = 3,843.11/x
3. Step 3: Cross multiply
   12,608.72x = 18,916.13 × 3,843.11
4. Step 4: Simplify right side
   12,608.72x = 72,696,654.57
5. Step 5: Solve for x
   x = 72,696,654.57/12,608.72
6. Step 6: Final answer
   x = 5,765.58