Finding the Fourth Proportional to 21,852.08, 30,158.52 and 12,422.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,852.08 : 30,158.52 = 12,422.96 : x
2. Step 2: Convert to fraction form
   21,852.08/30,158.52 = 12,422.96/x
3. Step 3: Cross multiply
   21,852.08x = 30,158.52 × 12,422.96
4. Step 4: Simplify right side
   21,852.08x = 374,658,087.62
5. Step 5: Solve for x
   x = 374,658,087.62/21,852.08
6. Step 6: Final answer
   x = 17,145.19