Finding the Fourth Proportional to 8,406.54, 12,510.57 and 8,126.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,406.54 : 12,510.57 = 8,126.25 : x
2. Step 2: Convert to fraction form
   8,406.54/12,510.57 = 8,126.25/x
3. Step 3: Cross multiply
   8,406.54x = 12,510.57 × 8,126.25
4. Step 4: Simplify right side
   8,406.54x = 101,664,026.78
5. Step 5: Solve for x
   x = 101,664,026.78/8,406.54
6. Step 6: Final answer
   x = 12,093.44