Finding the Fourth Proportional to 5,145.50, 7,711.46 and 2,806.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.50 : 7,711.46 = 2,806.52 : x
2. Step 2: Convert to fraction form
   5,145.50/7,711.46 = 2,806.52/x
3. Step 3: Cross multiply
   5,145.50x = 7,711.46 × 2,806.52
4. Step 4: Simplify right side
   5,145.50x = 21,642,335.18
5. Step 5: Solve for x
   x = 21,642,335.18/5,145.50
6. Step 6: Final answer
   x = 4,206.07