Finding the Fourth Proportional to 3,665.63, 5,058.21 and 2,173.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.63 : 5,058.21 = 2,173.34 : x
2. Step 2: Convert to fraction form
   3,665.63/5,058.21 = 2,173.34/x
3. Step 3: Cross multiply
   3,665.63x = 5,058.21 × 2,173.34
4. Step 4: Simplify right side
   3,665.63x = 10,993,198.35
5. Step 5: Solve for x
   x = 10,993,198.35/3,665.63
6. Step 6: Final answer
   x = 2,999.00