Finding the Fourth Proportional to 3,967.92, 5,477.90 and 2,623.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.92 : 5,477.90 = 2,623.59 : x
2. Step 2: Convert to fraction form
   3,967.92/5,477.90 = 2,623.59/x
3. Step 3: Cross multiply
   3,967.92x = 5,477.90 × 2,623.59
4. Step 4: Simplify right side
   3,967.92x = 14,371,750.54
5. Step 5: Solve for x
   x = 14,371,750.54/3,967.92
6. Step 6: Final answer
   x = 3,621.99