Finding the Fourth Proportional to 5,188.47, 7,160.00 and 2,830.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,188.47 : 7,160.00 = 2,830.61 : x
2. Step 2: Convert to fraction form
   5,188.47/7,160.00 = 2,830.61/x
3. Step 3: Cross multiply
   5,188.47x = 7,160.00 × 2,830.61
4. Step 4: Simplify right side
   5,188.47x = 20,267,117.65
5. Step 5: Solve for x
   x = 20,267,117.65/5,188.47
6. Step 6: Final answer
   x = 3,906.18