Finding the Fourth Proportional to 6,510.78, 8,984.89 and 3,526.61

Step by Step Solution

1. Step 1: Write the proportion equation
   6,510.78 : 8,984.89 = 3,526.61 : x
2. Step 2: Convert to fraction form
   6,510.78/8,984.89 = 3,526.61/x
3. Step 3: Cross multiply
   6,510.78x = 8,984.89 × 3,526.61
4. Step 4: Simplify right side
   6,510.78x = 31,686,162.41
5. Step 5: Solve for x
   x = 31,686,162.41/6,510.78
6. Step 6: Final answer
   x = 4,866.72