Finding the Fourth Proportional to 3,688.70, 5,089.83 and 2,116.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.70 : 5,089.83 = 2,116.49 : x
2. Step 2: Convert to fraction form
   3,688.70/5,089.83 = 2,116.49/x
3. Step 3: Cross multiply
   3,688.70x = 5,089.83 × 2,116.49
4. Step 4: Simplify right side
   3,688.70x = 10,772,574.30
5. Step 5: Solve for x
   x = 10,772,574.30/3,688.70
6. Step 6: Final answer
   x = 2,920.43