Finding the Fourth Proportional to 22,105.81, 30,507.60 and 12,416.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,105.81 : 30,507.60 = 12,416.05 : x
2. Step 2: Convert to fraction form
   22,105.81/30,507.60 = 12,416.05/x
3. Step 3: Cross multiply
   22,105.81x = 30,507.60 × 12,416.05
4. Step 4: Simplify right side
   22,105.81x = 378,783,886.98
5. Step 5: Solve for x
   x = 378,783,886.98/22,105.81
6. Step 6: Final answer
   x = 17,135.04