Finding the Fourth Proportional to 6,672.92, 9,996.42 and 3,212.60

Step by Step Solution

1. Step 1: Write the proportion equation
   6,672.92 : 9,996.42 = 3,212.60 : x
2. Step 2: Convert to fraction form
   6,672.92/9,996.42 = 3,212.60/x
3. Step 3: Cross multiply
   6,672.92x = 9,996.42 × 3,212.60
4. Step 4: Simplify right side
   6,672.92x = 32,114,498.89
5. Step 5: Solve for x
   x = 32,114,498.89/6,672.92
6. Step 6: Final answer
   x = 4,812.66