Finding the Fourth Proportional to 13,144.73, 19,710.81 and 7,219.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,144.73 : 19,710.81 = 7,219.58 : x
2. Step 2: Convert to fraction form
   13,144.73/19,710.81 = 7,219.58/x
3. Step 3: Cross multiply
   13,144.73x = 19,710.81 × 7,219.58
4. Step 4: Simplify right side
   13,144.73x = 142,303,671.11
5. Step 5: Solve for x
   x = 142,303,671.11/13,144.73
6. Step 6: Final answer
   x = 10,825.91