Finding the Fourth Proportional to 3,709.98, 5,119.47 and 2,116.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.98 : 5,119.47 = 2,116.62 : x
2. Step 2: Convert to fraction form
   3,709.98/5,119.47 = 2,116.62/x
3. Step 3: Cross multiply
   3,709.98x = 5,119.47 × 2,116.62
4. Step 4: Simplify right side
   3,709.98x = 10,835,972.59
5. Step 5: Solve for x
   x = 10,835,972.59/3,709.98
6. Step 6: Final answer
   x = 2,920.76