Finding the Fourth Proportional to 36,960.47, 55,462.58 and 13,603.31

Step by Step Solution

1. Step 1: Write the proportion equation
   36,960.47 : 55,462.58 = 13,603.31 : x
2. Step 2: Convert to fraction form
   36,960.47/55,462.58 = 13,603.31/x
3. Step 3: Cross multiply
   36,960.47x = 55,462.58 × 13,603.31
4. Step 4: Simplify right side
   36,960.47x = 754,474,669.14
5. Step 5: Solve for x
   x = 754,474,669.14/36,960.47
6. Step 6: Final answer
   x = 20,413.02