Finding the Fourth Proportional to 8,142.41, 12,212.24 and 3,698.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,142.41 : 12,212.24 = 3,698.69 : x
2. Step 2: Convert to fraction form
   8,142.41/12,212.24 = 3,698.69/x
3. Step 3: Cross multiply
   8,142.41x = 12,212.24 × 3,698.69
4. Step 4: Simplify right side
   8,142.41x = 45,169,329.74
5. Step 5: Solve for x
   x = 45,169,329.74/8,142.41
6. Step 6: Final answer
   x = 5,547.42