Finding the Fourth Proportional to 6,510.65, 8,984.15 and 3,821.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,510.65 : 8,984.15 = 3,821.57 : x
2. Step 2: Convert to fraction form
   6,510.65/8,984.15 = 3,821.57/x
3. Step 3: Cross multiply
   6,510.65x = 8,984.15 × 3,821.57
4. Step 4: Simplify right side
   6,510.65x = 34,333,561.47
5. Step 5: Solve for x
   x = 34,333,561.47/6,510.65
6. Step 6: Final answer
   x = 5,273.45