Finding the Fourth Proportional to 12,435.31, 18,654.18 and 3,672.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,435.31 : 18,654.18 = 3,672.73 : x
2. Step 2: Convert to fraction form
   12,435.31/18,654.18 = 3,672.73/x
3. Step 3: Cross multiply
   12,435.31x = 18,654.18 × 3,672.73
4. Step 4: Simplify right side
   12,435.31x = 68,511,719.88
5. Step 5: Solve for x
   x = 68,511,719.88/12,435.31
6. Step 6: Final answer
   x = 5,509.45