Finding the Fourth Proportional to 3,665.12, 5,056.90 and 2,173.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.12 : 5,056.90 = 2,173.37 : x
2. Step 2: Convert to fraction form
   3,665.12/5,056.90 = 2,173.37/x
3. Step 3: Cross multiply
   3,665.12x = 5,056.90 × 2,173.37
4. Step 4: Simplify right side
   3,665.12x = 10,990,484.04
5. Step 5: Solve for x
   x = 10,990,484.04/3,665.12
6. Step 6: Final answer
   x = 2,998.67