Finding the Fourth Proportional to 43,629.48, 65,442.82 and 12,464.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,629.48 : 65,442.82 = 12,464.72 : x
2. Step 2: Convert to fraction form
   43,629.48/65,442.82 = 12,464.72/x
3. Step 3: Cross multiply
   43,629.48x = 65,442.82 × 12,464.72
4. Step 4: Simplify right side
   43,629.48x = 815,726,427.31
5. Step 5: Solve for x
   x = 815,726,427.31/43,629.48
6. Step 6: Final answer
   x = 18,696.68