Finding the Fourth Proportional to 8,072.64, 12,108.72 and 2,877.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072.64 : 12,108.72 = 2,877.12 : x
2. Step 2: Convert to fraction form
   8,072.64/12,108.72 = 2,877.12/x
3. Step 3: Cross multiply
   8,072.64x = 12,108.72 × 2,877.12
4. Step 4: Simplify right side
   8,072.64x = 34,838,240.49
5. Step 5: Solve for x
   x = 34,838,240.49/8,072.64
6. Step 6: Final answer
   x = 4,315.59