Finding the Fourth Proportional to 3,710.50, 5,119.96 and 2,116.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,710.50 : 5,119.96 = 2,116.90 : x
2. Step 2: Convert to fraction form
   3,710.50/5,119.96 = 2,116.90/x
3. Step 3: Cross multiply
   3,710.50x = 5,119.96 × 2,116.90
4. Step 4: Simplify right side
   3,710.50x = 10,838,443.32
5. Step 5: Solve for x
   x = 10,838,443.32/3,710.50
6. Step 6: Final answer
   x = 2,921.02