Finding the Fourth Proportional to 8,662.53, 12,986.01 and 3,114.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.53 : 12,986.01 = 3,114.57 : x
2. Step 2: Convert to fraction form
   8,662.53/12,986.01 = 3,114.57/x
3. Step 3: Cross multiply
   8,662.53x = 12,986.01 × 3,114.57
4. Step 4: Simplify right side
   8,662.53x = 40,445,837.17
5. Step 5: Solve for x
   x = 40,445,837.17/8,662.53
6. Step 6: Final answer
   x = 4,669.06