Finding the Fourth Proportional to 3,709.09, 5,118.56 and 2,137.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.09 : 5,118.56 = 2,137.15 : x
2. Step 2: Convert to fraction form
   3,709.09/5,118.56 = 2,137.15/x
3. Step 3: Cross multiply
   3,709.09x = 5,118.56 × 2,137.15
4. Step 4: Simplify right side
   3,709.09x = 10,939,130.50
5. Step 5: Solve for x
   x = 10,939,130.50/3,709.09
6. Step 6: Final answer
   x = 2,949.28