Finding the Fourth Proportional to 22,203.12, 30,641.04 and 12,772.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,203.12 : 30,641.04 = 12,772.56 : x
2. Step 2: Convert to fraction form
   22,203.12/30,641.04 = 12,772.56/x
3. Step 3: Cross multiply
   22,203.12x = 30,641.04 × 12,772.56
4. Step 4: Simplify right side
   22,203.12x = 391,364,521.86
5. Step 5: Solve for x
   x = 391,364,521.86/22,203.12
6. Step 6: Final answer
   x = 17,626.56