Finding the Fourth Proportional to 8,131.23, 12,196.55 and 3,448.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.23 : 12,196.55 = 3,448.22 : x
2. Step 2: Convert to fraction form
   8,131.23/12,196.55 = 3,448.22/x
3. Step 3: Cross multiply
   8,131.23x = 12,196.55 × 3,448.22
4. Step 4: Simplify right side
   8,131.23x = 42,056,387.64
5. Step 5: Solve for x
   x = 42,056,387.64/8,131.23
6. Step 6: Final answer
   x = 5,172.21