Finding the Fourth Proportional to 12,962.49, 19,427.32 and 8,280.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,962.49 : 19,427.32 = 8,280.69 : x
2. Step 2: Convert to fraction form
   12,962.49/19,427.32 = 8,280.69/x
3. Step 3: Cross multiply
   12,962.49x = 19,427.32 × 8,280.69
4. Step 4: Simplify right side
   12,962.49x = 160,871,614.45
5. Step 5: Solve for x
   x = 160,871,614.45/12,962.49
6. Step 6: Final answer
   x = 12,410.55