Finding the Fourth Proportional to 12,309.47, 18,462.59 and 3,425.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,309.47 : 18,462.59 = 3,425.39 : x
2. Step 2: Convert to fraction form
   12,309.47/18,462.59 = 3,425.39/x
3. Step 3: Cross multiply
   12,309.47x = 18,462.59 × 3,425.39
4. Step 4: Simplify right side
   12,309.47x = 63,241,554.03
5. Step 5: Solve for x
   x = 63,241,554.03/12,309.47
6. Step 6: Final answer
   x = 5,137.63