Finding the Fourth Proportional to 12,010.77, 18,010.17 and 4,111.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,010.77 : 18,010.17 = 4,111.05 : x
2. Step 2: Convert to fraction form
   12,010.77/18,010.17 = 4,111.05/x
3. Step 3: Cross multiply
   12,010.77x = 18,010.17 × 4,111.05
4. Step 4: Simplify right side
   12,010.77x = 74,040,709.38
5. Step 5: Solve for x
   x = 74,040,709.38/12,010.77
6. Step 6: Final answer
   x = 6,164.53