Finding the Fourth Proportional to 8,071.72, 12,108.79 and 2,877.19

Step by Step Solution

1. Step 1: Write the proportion equation
   8,071.72 : 12,108.79 = 2,877.19 : x
2. Step 2: Convert to fraction form
   8,071.72/12,108.79 = 2,877.19/x
3. Step 3: Cross multiply
   8,071.72x = 12,108.79 × 2,877.19
4. Step 4: Simplify right side
   8,071.72x = 34,839,262.82
5. Step 5: Solve for x
   x = 34,839,262.82/8,071.72
6. Step 6: Final answer
   x = 4,316.21