Finding the Fourth Proportional to 8,309.10, 12,460.00 and 3,111.33

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309.10 : 12,460.00 = 3,111.33 : x
2. Step 2: Convert to fraction form
   8,309.10/12,460.00 = 3,111.33/x
3. Step 3: Cross multiply
   8,309.10x = 12,460.00 × 3,111.33
4. Step 4: Simplify right side
   8,309.10x = 38,767,146.49
5. Step 5: Solve for x
   x = 38,767,146.49/8,309.10
6. Step 6: Final answer
   x = 4,665.63