Finding the Fourth Proportional to 8,145.36, 12,210.55 and 2,876.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145.36 : 12,210.55 = 2,876.51 : x
2. Step 2: Convert to fraction form
   8,145.36/12,210.55 = 2,876.51/x
3. Step 3: Cross multiply
   8,145.36x = 12,210.55 × 2,876.51
4. Step 4: Simplify right side
   8,145.36x = 35,123,792.52
5. Step 5: Solve for x
   x = 35,123,792.52/8,145.36
6. Step 6: Final answer
   x = 4,312.12