Finding the Fourth Proportional to 12,072.40, 18,010.31 and 10,110.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,072.40 : 18,010.31 = 10,110.17 : x
2. Step 2: Convert to fraction form
   12,072.40/18,010.31 = 10,110.17/x
3. Step 3: Cross multiply
   12,072.40x = 18,010.31 × 10,110.17
4. Step 4: Simplify right side
   12,072.40x = 182,087,290.33
5. Step 5: Solve for x
   x = 182,087,290.33/12,072.40
6. Step 6: Final answer
   x = 15,082.94