Finding the Fourth Proportional to 8,072.88, 12,109.00 and 2,809.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072.88 : 12,109.00 = 2,809.10 : x
2. Step 2: Convert to fraction form
   8,072.88/12,109.00 = 2,809.10/x
3. Step 3: Cross multiply
   8,072.88x = 12,109.00 × 2,809.10
4. Step 4: Simplify right side
   8,072.88x = 34,015,347.58
5. Step 5: Solve for x
   x = 34,015,347.58/8,072.88
6. Step 6: Final answer
   x = 4,213.53