Finding the Fourth Proportional to 8,072.88, 12,114.87 and 3,142.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072.88 : 12,114.87 = 3,142.56 : x
2. Step 2: Convert to fraction form
   8,072.88/12,114.87 = 3,142.56/x
3. Step 3: Cross multiply
   8,072.88x = 12,114.87 × 3,142.56
4. Step 4: Simplify right side
   8,072.88x = 38,071,705.87
5. Step 5: Solve for x
   x = 38,071,705.87/8,072.88
6. Step 6: Final answer
   x = 4,716.00