Finding the Fourth Proportional to 3,389.56, 5,072.30 and 2,072.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,389.56 : 5,072.30 = 2,072.86 : x
2. Step 2: Convert to fraction form
   3,389.56/5,072.30 = 2,072.86/x
3. Step 3: Cross multiply
   3,389.56x = 5,072.30 × 2,072.86
4. Step 4: Simplify right side
   3,389.56x = 10,514,167.78
5. Step 5: Solve for x
   x = 10,514,167.78/3,389.56
6. Step 6: Final answer
   x = 3,101.93