Finding the Fourth Proportional to 8,525.39, 12,791.62 and 4,080.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,525.39 : 12,791.62 = 4,080.81 : x
2. Step 2: Convert to fraction form
   8,525.39/12,791.62 = 4,080.81/x
3. Step 3: Cross multiply
   8,525.39x = 12,791.62 × 4,080.81
4. Step 4: Simplify right side
   8,525.39x = 52,200,223.88
5. Step 5: Solve for x
   x = 52,200,223.88/8,525.39
6. Step 6: Final answer
   x = 6,122.92