Finding the Fourth Proportional to 8,072, 12,108.76 and 3,142.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072 : 12,108.76 = 3,142.02 : x
2. Step 2: Convert to fraction form
   8,072/12,108.76 = 3,142.02/x
3. Step 3: Cross multiply
   8,072x = 12,108.76 × 3,142.02
4. Step 4: Simplify right side
   8,072x = 38,045,966.10
5. Step 5: Solve for x
   x = 38,045,966.10/8,072
6. Step 6: Final answer
   x = 4,713.33