Finding the Fourth Proportional to 22,150.13, 30,567.78 and 12,719.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,150.13 : 30,567.78 = 12,719.30 : x
2. Step 2: Convert to fraction form
   22,150.13/30,567.78 = 12,719.30/x
3. Step 3: Cross multiply
   22,150.13x = 30,567.78 × 12,719.30
4. Step 4: Simplify right side
   22,150.13x = 388,800,611.32
5. Step 5: Solve for x
   x = 388,800,611.32/22,150.13
6. Step 6: Final answer
   x = 17,552.98