Finding the Fourth Proportional to 6,678.72, 10,013.76 and 3,214.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,678.72 : 10,013.76 = 3,214.08 : x
2. Step 2: Convert to fraction form
   6,678.72/10,013.76 = 3,214.08/x
3. Step 3: Cross multiply
   6,678.72x = 10,013.76 × 3,214.08
4. Step 4: Simplify right side
   6,678.72x = 32,185,025.74
5. Step 5: Solve for x
   x = 32,185,025.74/6,678.72
6. Step 6: Final answer
   x = 4,819.04