Finding the Fourth Proportional to 12,919.02, 19,380.49 and 5,523.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,919.02 : 19,380.49 = 5,523.50 : x
2. Step 2: Convert to fraction form
   12,919.02/19,380.49 = 5,523.50/x
3. Step 3: Cross multiply
   12,919.02x = 19,380.49 × 5,523.50
4. Step 4: Simplify right side
   12,919.02x = 107,048,136.52
5. Step 5: Solve for x
   x = 107,048,136.52/12,919.02
6. Step 6: Final answer
   x = 8,286.09