Finding the Fourth Proportional to 22,177.21, 30,603.96 and 12,105.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,177.21 : 30,603.96 = 12,105.78 : x
2. Step 2: Convert to fraction form
   22,177.21/30,603.96 = 12,105.78/x
3. Step 3: Cross multiply
   22,177.21x = 30,603.96 × 12,105.78
4. Step 4: Simplify right side
   22,177.21x = 370,484,806.89
5. Step 5: Solve for x
   x = 370,484,806.89/22,177.21
6. Step 6: Final answer
   x = 16,705.65