Finding the Fourth Proportional to 8,071.78, 12,109.29 and 2,877.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,071.78 : 12,109.29 = 2,877.52 : x
2. Step 2: Convert to fraction form
   8,071.78/12,109.29 = 2,877.52/x
3. Step 3: Cross multiply
   8,071.78x = 12,109.29 × 2,877.52
4. Step 4: Simplify right side
   8,071.78x = 34,844,724.16
5. Step 5: Solve for x
   x = 34,844,724.16/8,071.78
6. Step 6: Final answer
   x = 4,316.86