Finding the Fourth Proportional to 8,574.78, 12,926.43 and 8,003.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,574.78 : 12,926.43 = 8,003.25 : x
2. Step 2: Convert to fraction form
   8,574.78/12,926.43 = 8,003.25/x
3. Step 3: Cross multiply
   8,574.78x = 12,926.43 × 8,003.25
4. Step 4: Simplify right side
   8,574.78x = 103,453,450.90
5. Step 5: Solve for x
   x = 103,453,450.90/8,574.78
6. Step 6: Final answer
   x = 12,064.86