Finding the Fourth Proportional to 5,158.73, 7,118.85 and 2,800.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,158.73 : 7,118.85 = 2,800.82 : x
2. Step 2: Convert to fraction form
   5,158.73/7,118.85 = 2,800.82/x
3. Step 3: Cross multiply
   5,158.73x = 7,118.85 × 2,800.82
4. Step 4: Simplify right side
   5,158.73x = 19,938,617.46
5. Step 5: Solve for x
   x = 19,938,617.46/5,158.73
6. Step 6: Final answer
   x = 3,865.02