Finding the Fourth Proportional to 5,116.71, 7,669.38 and 2,920.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.71 : 7,669.38 = 2,920.59 : x
2. Step 2: Convert to fraction form
   5,116.71/7,669.38 = 2,920.59/x
3. Step 3: Cross multiply
   5,116.71x = 7,669.38 × 2,920.59
4. Step 4: Simplify right side
   5,116.71x = 22,399,114.53
5. Step 5: Solve for x
   x = 22,399,114.53/5,116.71
6. Step 6: Final answer
   x = 4,377.64