Finding the Fourth Proportional to 6,613.31, 9,921.64 and 3,053.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,613.31 : 9,921.64 = 3,053.72 : x
2. Step 2: Convert to fraction form
   6,613.31/9,921.64 = 3,053.72/x
3. Step 3: Cross multiply
   6,613.31x = 9,921.64 × 3,053.72
4. Step 4: Simplify right side
   6,613.31x = 30,297,910.50
5. Step 5: Solve for x
   x = 30,297,910.50/6,613.31
6. Step 6: Final answer
   x = 4,581.35