Finding the Fourth Proportional to 12,146.72, 18,222.64 and 3,829.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.72 : 18,222.64 = 3,829.10 : x
2. Step 2: Convert to fraction form
   12,146.72/18,222.64 = 3,829.10/x
3. Step 3: Cross multiply
   12,146.72x = 18,222.64 × 3,829.10
4. Step 4: Simplify right side
   12,146.72x = 69,776,310.82
5. Step 5: Solve for x
   x = 69,776,310.82/12,146.72
6. Step 6: Final answer
   x = 5,744.46