Finding the Fourth Proportional to 13,144.25, 19,704.63 and 4,822.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,144.25 : 19,704.63 = 4,822.31 : x
2. Step 2: Convert to fraction form
   13,144.25/19,704.63 = 4,822.31/x
3. Step 3: Cross multiply
   13,144.25x = 19,704.63 × 4,822.31
4. Step 4: Simplify right side
   13,144.25x = 95,021,834.30
5. Step 5: Solve for x
   x = 95,021,834.30/13,144.25
6. Step 6: Final answer
   x = 7,229.16