Finding the Fourth Proportional to 43,501.49, 65,238.20 and 12,328.37

Step by Step Solution

1. Step 1: Write the proportion equation
   43,501.49 : 65,238.20 = 12,328.37 : x
2. Step 2: Convert to fraction form
   43,501.49/65,238.20 = 12,328.37/x
3. Step 3: Cross multiply
   43,501.49x = 65,238.20 × 12,328.37
4. Step 4: Simplify right side
   43,501.49x = 804,280,606.09
5. Step 5: Solve for x
   x = 804,280,606.09/43,501.49
6. Step 6: Final answer
   x = 18,488.58