Finding the Fourth Proportional to 3,973.18, 5,481.72 and 2,647.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,973.18 : 5,481.72 = 2,647.12 : x
2. Step 2: Convert to fraction form
   3,973.18/5,481.72 = 2,647.12/x
3. Step 3: Cross multiply
   3,973.18x = 5,481.72 × 2,647.12
4. Step 4: Simplify right side
   3,973.18x = 14,510,770.65
5. Step 5: Solve for x
   x = 14,510,770.65/3,973.18
6. Step 6: Final answer
   x = 3,652.18