Finding the Fourth Proportional to 12,912.48, 19,379.25 and 5,522.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,912.48 : 19,379.25 = 5,522.04 : x
2. Step 2: Convert to fraction form
   12,912.48/19,379.25 = 5,522.04/x
3. Step 3: Cross multiply
   12,912.48x = 19,379.25 × 5,522.04
4. Step 4: Simplify right side
   12,912.48x = 107,012,993.67
5. Step 5: Solve for x
   x = 107,012,993.67/12,912.48
6. Step 6: Final answer
   x = 8,287.56