Finding the Fourth Proportional to 12,320.73, 18,481.25 and 3,555.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,320.73 : 18,481.25 = 3,555.72 : x
2. Step 2: Convert to fraction form
   12,320.73/18,481.25 = 3,555.72/x
3. Step 3: Cross multiply
   12,320.73x = 18,481.25 × 3,555.72
4. Step 4: Simplify right side
   12,320.73x = 65,714,150.25
5. Step 5: Solve for x
   x = 65,714,150.25/12,320.73
6. Step 6: Final answer
   x = 5,333.62