Finding the Fourth Proportional to 8,662.02, 12,991.59 and 3,114.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.02 : 12,991.59 = 3,114.24 : x
2. Step 2: Convert to fraction form
   8,662.02/12,991.59 = 3,114.24/x
3. Step 3: Cross multiply
   8,662.02x = 12,991.59 × 3,114.24
4. Step 4: Simplify right side
   8,662.02x = 40,458,929.24
5. Step 5: Solve for x
   x = 40,458,929.24/8,662.02
6. Step 6: Final answer
   x = 4,670.84