Finding the Fourth Proportional to 6,300.78, 9,450.78 and 2,789.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,300.78 : 9,450.78 = 2,789.76 : x
2. Step 2: Convert to fraction form
   6,300.78/9,450.78 = 2,789.76/x
3. Step 3: Cross multiply
   6,300.78x = 9,450.78 × 2,789.76
4. Step 4: Simplify right side
   6,300.78x = 26,365,367.73
5. Step 5: Solve for x
   x = 26,365,367.73/6,300.78
6. Step 6: Final answer
   x = 4,184.46