Finding the Fourth Proportional to 12,072.75, 18,107.59 and 4,672.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,072.75 : 18,107.59 = 4,672.15 : x
2. Step 2: Convert to fraction form
   12,072.75/18,107.59 = 4,672.15/x
3. Step 3: Cross multiply
   12,072.75x = 18,107.59 × 4,672.15
4. Step 4: Simplify right side
   12,072.75x = 84,601,328.43
5. Step 5: Solve for x
   x = 84,601,328.43/12,072.75
6. Step 6: Final answer
   x = 7,007.63