Finding the Fourth Proportional to 22,289, 30,758.82 and 12,858.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,289 : 30,758.82 = 12,858.98 : x
2. Step 2: Convert to fraction form
   22,289/30,758.82 = 12,858.98/x
3. Step 3: Cross multiply
   22,289x = 30,758.82 × 12,858.98
4. Step 4: Simplify right side
   22,289x = 395,527,051.20
5. Step 5: Solve for x
   x = 395,527,051.20/22,289
6. Step 6: Final answer
   x = 17,745.39