Finding the Fourth Proportional to 3,890.49, 5,369.00 and 2,211.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.49 : 5,369.00 = 2,211.98 : x
2. Step 2: Convert to fraction form
   3,890.49/5,369.00 = 2,211.98/x
3. Step 3: Cross multiply
   3,890.49x = 5,369.00 × 2,211.98
4. Step 4: Simplify right side
   3,890.49x = 11,876,082.72
5. Step 5: Solve for x
   x = 11,876,082.72/3,890.49
6. Step 6: Final answer
   x = 3,052.59