Finding the Fourth Proportional to 6,877.89, 10,311.35 and 2,979.59

Step by Step Solution

1. Step 1: Write the proportion equation
   6,877.89 : 10,311.35 = 2,979.59 : x
2. Step 2: Convert to fraction form
   6,877.89/10,311.35 = 2,979.59/x
3. Step 3: Cross multiply
   6,877.89x = 10,311.35 × 2,979.59
4. Step 4: Simplify right side
   6,877.89x = 30,723,528.89
5. Step 5: Solve for x
   x = 30,723,528.89/6,877.89
6. Step 6: Final answer
   x = 4,467.00