Finding the Fourth Proportional to 22,003.61, 30,364.56 and 12,443.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,003.61 : 30,364.56 = 12,443.36 : x
2. Step 2: Convert to fraction form
   22,003.61/30,364.56 = 12,443.36/x
3. Step 3: Cross multiply
   22,003.61x = 30,364.56 × 12,443.36
4. Step 4: Simplify right side
   22,003.61x = 377,836,999.50
5. Step 5: Solve for x
   x = 377,836,999.50/22,003.61
6. Step 6: Final answer
   x = 17,171.60