Finding the Fourth Proportional to 5,162.87, 7,124.76 and 2,805.00

Step by Step Solution

1. Step 1: Write the proportion equation
   5,162.87 : 7,124.76 = 2,805.00 : x
2. Step 2: Convert to fraction form
   5,162.87/7,124.76 = 2,805.00/x
3. Step 3: Cross multiply
   5,162.87x = 7,124.76 × 2,805.00
4. Step 4: Simplify right side
   5,162.87x = 19,984,902.15
5. Step 5: Solve for x
   x = 19,984,902.15/5,162.87
6. Step 6: Final answer
   x = 3,870.89