Finding the Fourth Proportional to 12,072.94, 18,111.96 and 3,752.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,072.94 : 18,111.96 = 3,752.80 : x
2. Step 2: Convert to fraction form
   12,072.94/18,111.96 = 3,752.80/x
3. Step 3: Cross multiply
   12,072.94x = 18,111.96 × 3,752.80
4. Step 4: Simplify right side
   12,072.94x = 67,970,563.49
5. Step 5: Solve for x
   x = 67,970,563.49/12,072.94
6. Step 6: Final answer
   x = 5,629.99