Finding the Fourth Proportional to 22,378.64, 30,881.83 and 12,305.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,378.64 : 30,881.83 = 12,305.69 : x
2. Step 2: Convert to fraction form
   22,378.64/30,881.83 = 12,305.69/x
3. Step 3: Cross multiply
   22,378.64x = 30,881.83 × 12,305.69
4. Step 4: Simplify right side
   22,378.64x = 380,022,226.61
5. Step 5: Solve for x
   x = 380,022,226.61/22,378.64
6. Step 6: Final answer
   x = 16,981.47