Finding the Fourth Proportional to 3,659.78, 5,050.17 and 2,167.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,659.78 : 5,050.17 = 2,167.43 : x
2. Step 2: Convert to fraction form
   3,659.78/5,050.17 = 2,167.43/x
3. Step 3: Cross multiply
   3,659.78x = 5,050.17 × 2,167.43
4. Step 4: Simplify right side
   3,659.78x = 10,945,889.96
5. Step 5: Solve for x
   x = 10,945,889.96/3,659.78
6. Step 6: Final answer
   x = 2,990.86