Finding the Fourth Proportional to 4,099.14, 6,139.98 and 2,145.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,099.14 : 6,139.98 = 2,145.42 : x
2. Step 2: Convert to fraction form
   4,099.14/6,139.98 = 2,145.42/x
3. Step 3: Cross multiply
   4,099.14x = 6,139.98 × 2,145.42
4. Step 4: Simplify right side
   4,099.14x = 13,172,835.89
5. Step 5: Solve for x
   x = 13,172,835.89/4,099.14
6. Step 6: Final answer
   x = 3,213.56