Finding the Fourth Proportional to 6,857.74, 10,278.83 and 3,152.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,857.74 : 10,278.83 = 3,152.31 : x
2. Step 2: Convert to fraction form
   6,857.74/10,278.83 = 3,152.31/x
3. Step 3: Cross multiply
   6,857.74x = 10,278.83 × 3,152.31
4. Step 4: Simplify right side
   6,857.74x = 32,402,042.84
5. Step 5: Solve for x
   x = 32,402,042.84/6,857.74
6. Step 6: Final answer
   x = 4,724.89