Finding the Fourth Proportional to 8,159.98, 12,242.12 and 3,480.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,159.98 : 12,242.12 = 3,480.25 : x
2. Step 2: Convert to fraction form
   8,159.98/12,242.12 = 3,480.25/x
3. Step 3: Cross multiply
   8,159.98x = 12,242.12 × 3,480.25
4. Step 4: Simplify right side
   8,159.98x = 42,605,638.13
5. Step 5: Solve for x
   x = 42,605,638.13/8,159.98
6. Step 6: Final answer
   x = 5,221.29