Finding the Fourth Proportional to 3,709.65, 5,118.82 and 2,116.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709.65 : 5,118.82 = 2,116.52 : x
2. Step 2: Convert to fraction form
   3,709.65/5,118.82 = 2,116.52/x
3. Step 3: Cross multiply
   3,709.65x = 5,118.82 × 2,116.52
4. Step 4: Simplify right side
   3,709.65x = 10,834,084.91
5. Step 5: Solve for x
   x = 10,834,084.91/3,709.65
6. Step 6: Final answer
   x = 2,920.51