Finding the Fourth Proportional to 5,087.86, 7,020.65 and 2,849.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,087.86 : 7,020.65 = 2,849.61 : x
2. Step 2: Convert to fraction form
   5,087.86/7,020.65 = 2,849.61/x
3. Step 3: Cross multiply
   5,087.86x = 7,020.65 × 2,849.61
4. Step 4: Simplify right side
   5,087.86x = 20,006,080.65
5. Step 5: Solve for x
   x = 20,006,080.65/5,087.86
6. Step 6: Final answer
   x = 3,932.12