Finding the Fourth Proportional to 8,158.51, 12,238.71 and 2,965.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,158.51 : 12,238.71 = 2,965.60 : x
2. Step 2: Convert to fraction form
   8,158.51/12,238.71 = 2,965.60/x
3. Step 3: Cross multiply
   8,158.51x = 12,238.71 × 2,965.60
4. Step 4: Simplify right side
   8,158.51x = 36,295,118.38
5. Step 5: Solve for x
   x = 36,295,118.38/8,158.51
6. Step 6: Final answer
   x = 4,448.74