Finding the Fourth Proportional to 3,916.83, 5,405.18 and 2,238.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.83 : 5,405.18 = 2,238.22 : x
2. Step 2: Convert to fraction form
   3,916.83/5,405.18 = 2,238.22/x
3. Step 3: Cross multiply
   3,916.83x = 5,405.18 × 2,238.22
4. Step 4: Simplify right side
   3,916.83x = 12,097,957.28
5. Step 5: Solve for x
   x = 12,097,957.28/3,916.83
6. Step 6: Final answer
   x = 3,088.71