Finding the Fourth Proportional to 8,139.25, 12,209.01 and 3,522.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139.25 : 12,209.01 = 3,522.25 : x
2. Step 2: Convert to fraction form
   8,139.25/12,209.01 = 3,522.25/x
3. Step 3: Cross multiply
   8,139.25x = 12,209.01 × 3,522.25
4. Step 4: Simplify right side
   8,139.25x = 43,003,185.47
5. Step 5: Solve for x
   x = 43,003,185.47/8,139.25
6. Step 6: Final answer
   x = 5,283.43