Finding the Fourth Proportional to 6,628.69, 9,937.59 and 3,116.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,628.69 : 9,937.59 = 3,116.98 : x
2. Step 2: Convert to fraction form
   6,628.69/9,937.59 = 3,116.98/x
3. Step 3: Cross multiply
   6,628.69x = 9,937.59 × 3,116.98
4. Step 4: Simplify right side
   6,628.69x = 30,975,269.28
5. Step 5: Solve for x
   x = 30,975,269.28/6,628.69
6. Step 6: Final answer
   x = 4,672.91