Finding the Fourth Proportional to 5,188.45, 7,160.17 and 2,830.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,188.45 : 7,160.17 = 2,830.59 : x
2. Step 2: Convert to fraction form
   5,188.45/7,160.17 = 2,830.59/x
3. Step 3: Cross multiply
   5,188.45x = 7,160.17 × 2,830.59
4. Step 4: Simplify right side
   5,188.45x = 20,267,498.52
5. Step 5: Solve for x
   x = 20,267,498.52/5,188.45
6. Step 6: Final answer
   x = 3,906.27