Finding the Fourth Proportional to 3,916.40, 5,404.22 and 2,238.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.40 : 5,404.22 = 2,238.24 : x
2. Step 2: Convert to fraction form
   3,916.40/5,404.22 = 2,238.24/x
3. Step 3: Cross multiply
   3,916.40x = 5,404.22 × 2,238.24
4. Step 4: Simplify right side
   3,916.40x = 12,095,941.37
5. Step 5: Solve for x
   x = 12,095,941.37/3,916.40
6. Step 6: Final answer
   x = 3,088.54