Finding the Fourth Proportional to 8,072.50, 12,114.25 and 2,807.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072.50 : 12,114.25 = 2,807.45 : x
2. Step 2: Convert to fraction form
   8,072.50/12,114.25 = 2,807.45/x
3. Step 3: Cross multiply
   8,072.50x = 12,114.25 × 2,807.45
4. Step 4: Simplify right side
   8,072.50x = 34,010,197.79
5. Step 5: Solve for x
   x = 34,010,197.79/8,072.50
6. Step 6: Final answer
   x = 4,213.10