Finding the Fourth Proportional to 3,111.04, 4,667.10 and 3,107.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.04 : 4,667.10 = 3,107.80 : x
2. Step 2: Convert to fraction form
   3,111.04/4,667.10 = 3,107.80/x
3. Step 3: Cross multiply
   3,111.04x = 4,667.10 × 3,107.80
4. Step 4: Simplify right side
   3,111.04x = 14,504,413.38
5. Step 5: Solve for x
   x = 14,504,413.38/3,111.04
6. Step 6: Final answer
   x = 4,662.24