Finding the Fourth Proportional to 3,916.72, 5,404.12 and 2,237.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.72 : 5,404.12 = 2,237.91 : x
2. Step 2: Convert to fraction form
   3,916.72/5,404.12 = 2,237.91/x
3. Step 3: Cross multiply
   3,916.72x = 5,404.12 × 2,237.91
4. Step 4: Simplify right side
   3,916.72x = 12,093,934.19
5. Step 5: Solve for x
   x = 12,093,934.19/3,916.72
6. Step 6: Final answer
   x = 3,087.77