Finding the Fourth Proportional to 22,205.12, 30,643.80 and 12,774.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,205.12 : 30,643.80 = 12,774.56 : x
2. Step 2: Convert to fraction form
   22,205.12/30,643.80 = 12,774.56/x
3. Step 3: Cross multiply
   22,205.12x = 30,643.80 × 12,774.56
4. Step 4: Simplify right side
   22,205.12x = 391,461,061.73
5. Step 5: Solve for x
   x = 391,461,061.73/22,205.12
6. Step 6: Final answer
   x = 17,629.32