Finding the Fourth Proportional to 12,919.48, 19,381.24 and 5,523.97

Step by Step Solution

1. Step 1: Write the proportion equation
   12,919.48 : 19,381.24 = 5,523.97 : x
2. Step 2: Convert to fraction form
   12,919.48/19,381.24 = 5,523.97/x
3. Step 3: Cross multiply
   12,919.48x = 19,381.24 × 5,523.97
4. Step 4: Simplify right side
   12,919.48x = 107,061,388.32
5. Step 5: Solve for x
   x = 107,061,388.32/12,919.48
6. Step 6: Final answer
   x = 8,286.82