Finding the Fourth Proportional to 6,510.38, 8,979.12 and 4,209.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,510.38 : 8,979.12 = 4,209.98 : x
2. Step 2: Convert to fraction form
   6,510.38/8,979.12 = 4,209.98/x
3. Step 3: Cross multiply
   6,510.38x = 8,979.12 × 4,209.98
4. Step 4: Simplify right side
   6,510.38x = 37,801,870.72
5. Step 5: Solve for x
   x = 37,801,870.72/6,510.38
6. Step 6: Final answer
   x = 5,806.40