Finding the Fourth Proportional to 31,048.56, 46,569.60 and 8,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,048.56 : 46,569.60 = 8,860.50 : x
2. Step 2: Convert to fraction form
   31,048.56/46,569.60 = 8,860.50/x
3. Step 3: Cross multiply
   31,048.56x = 46,569.60 × 8,860.50
4. Step 4: Simplify right side
   31,048.56x = 412,629,940.80
5. Step 5: Solve for x
   x = 412,629,940.80/31,048.56
6. Step 6: Final answer
   x = 13,289.83