Finding the Fourth Proportional to 22,152.75, 30,570.80 and 12,216.75

Step by Step Solution

1. Step 1: Write the proportion equation
   22,152.75 : 30,570.80 = 12,216.75 : x
2. Step 2: Convert to fraction form
   22,152.75/30,570.80 = 12,216.75/x
3. Step 3: Cross multiply
   22,152.75x = 30,570.80 × 12,216.75
4. Step 4: Simplify right side
   22,152.75x = 373,475,759.82
5. Step 5: Solve for x
   x = 373,475,759.82/22,152.75
6. Step 6: Final answer
   x = 16,859.12