Finding the Fourth Proportional to 12,010.18, 18,019.72 and 4,113.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,010.18 : 18,019.72 = 4,113.48 : x
2. Step 2: Convert to fraction form
   12,010.18/18,019.72 = 4,113.48/x
3. Step 3: Cross multiply
   12,010.18x = 18,019.72 × 4,113.48
4. Step 4: Simplify right side
   12,010.18x = 74,123,757.83
5. Step 5: Solve for x
   x = 74,123,757.83/12,010.18
6. Step 6: Final answer
   x = 6,171.74