Finding the Fourth Proportional to 8,131.61, 12,197.12 and 3,448.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.61 : 12,197.12 = 3,448.59 : x
2. Step 2: Convert to fraction form
   8,131.61/12,197.12 = 3,448.59/x
3. Step 3: Cross multiply
   8,131.61x = 12,197.12 × 3,448.59
4. Step 4: Simplify right side
   8,131.61x = 42,062,848.82
5. Step 5: Solve for x
   x = 42,062,848.82/8,131.61
6. Step 6: Final answer
   x = 5,172.76