Finding the Fourth Proportional to 22,152.25, 30,570.29 and 12,216.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,152.25 : 30,570.29 = 12,216.25 : x
2. Step 2: Convert to fraction form
   22,152.25/30,570.29 = 12,216.25/x
3. Step 3: Cross multiply
   22,152.25x = 30,570.29 × 12,216.25
4. Step 4: Simplify right side
   22,152.25x = 373,454,305.21
5. Step 5: Solve for x
   x = 373,454,305.21/22,152.25
6. Step 6: Final answer
   x = 16,858.53