Finding the Fourth Proportional to 3,709.20, 5,116.59 and 2,137.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.20 : 5,116.59 = 2,137.02 : x
2. Step 2: Convert to fraction form
   3,709.20/5,116.59 = 2,137.02/x
3. Step 3: Cross multiply
   3,709.20x = 5,116.59 × 2,137.02
4. Step 4: Simplify right side
   3,709.20x = 10,934,255.16
5. Step 5: Solve for x
   x = 10,934,255.16/3,709.20
6. Step 6: Final answer
   x = 2,947.87