Finding the Fourth Proportional to 6,510.87, 8,985.55 and 3,678.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,510.87 : 8,985.55 = 3,678.76 : x
2. Step 2: Convert to fraction form
   6,510.87/8,985.55 = 3,678.76/x
3. Step 3: Cross multiply
   6,510.87x = 8,985.55 × 3,678.76
4. Step 4: Simplify right side
   6,510.87x = 33,055,618.60
5. Step 5: Solve for x
   x = 33,055,618.60/6,510.87
6. Step 6: Final answer
   x = 5,076.99