Finding the Fourth Proportional to 6,630.18, 9,945.30 and 3,166.62

Step by Step Solution

1. Step 1: Write the proportion equation
   6,630.18 : 9,945.30 = 3,166.62 : x
2. Step 2: Convert to fraction form
   6,630.18/9,945.30 = 3,166.62/x
3. Step 3: Cross multiply
   6,630.18x = 9,945.30 × 3,166.62
4. Step 4: Simplify right side
   6,630.18x = 31,492,985.89
5. Step 5: Solve for x
   x = 31,492,985.89/6,630.18
6. Step 6: Final answer
   x = 4,749.94