Finding the Fourth Proportional to 12,061.78, 18,086.16 and 3,738.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,061.78 : 18,086.16 = 3,738.22 : x
2. Step 2: Convert to fraction form
   12,061.78/18,086.16 = 3,738.22/x
3. Step 3: Cross multiply
   12,061.78x = 18,086.16 × 3,738.22
4. Step 4: Simplify right side
   12,061.78x = 67,610,045.04
5. Step 5: Solve for x
   x = 67,610,045.04/12,061.78
6. Step 6: Final answer
   x = 5,605.31