Finding the Fourth Proportional to 6,857.98, 10,279.20 and 3,152.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,857.98 : 10,279.20 = 3,152.56 : x
2. Step 2: Convert to fraction form
   6,857.98/10,279.20 = 3,152.56/x
3. Step 3: Cross multiply
   6,857.98x = 10,279.20 × 3,152.56
4. Step 4: Simplify right side
   6,857.98x = 32,405,769.05
5. Step 5: Solve for x
   x = 32,405,769.05/6,857.98
6. Step 6: Final answer
   x = 4,725.27