Finding the Fourth Proportional to 8,107.75, 12,145.89 and 5,325.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,107.75 : 12,145.89 = 5,325.98 : x
2. Step 2: Convert to fraction form
   8,107.75/12,145.89 = 5,325.98/x
3. Step 3: Cross multiply
   8,107.75x = 12,145.89 × 5,325.98
4. Step 4: Simplify right side
   8,107.75x = 64,688,767.22
5. Step 5: Solve for x
   x = 64,688,767.22/8,107.75
6. Step 6: Final answer
   x = 7,978.63