Finding the Fourth Proportional to 12,045.82, 18,072.38 and 8,542.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,045.82 : 18,072.38 = 8,542.60 : x
2. Step 2: Convert to fraction form
   12,045.82/18,072.38 = 8,542.60/x
3. Step 3: Cross multiply
   12,045.82x = 18,072.38 × 8,542.60
4. Step 4: Simplify right side
   12,045.82x = 154,385,113.39
5. Step 5: Solve for x
   x = 154,385,113.39/12,045.82
6. Step 6: Final answer
   x = 12,816.49