Finding the Fourth Proportional to 2,627.16, 3,942.76 and 2,606.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.16 : 3,942.76 = 2,606.64 : x
2. Step 2: Convert to fraction form
   2,627.16/3,942.76 = 2,606.64/x
3. Step 3: Cross multiply
   2,627.16x = 3,942.76 × 2,606.64
4. Step 4: Simplify right side
   2,627.16x = 10,277,355.93
5. Step 5: Solve for x
   x = 10,277,355.93/2,627.16
6. Step 6: Final answer
   x = 3,911.96