Finding the Fourth Proportional to 22,453.80, 30,985.98 and 12,381.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,453.80 : 30,985.98 = 12,381.72 : x
2. Step 2: Convert to fraction form
   22,453.80/30,985.98 = 12,381.72/x
3. Step 3: Cross multiply
   22,453.80x = 30,985.98 × 12,381.72
4. Step 4: Simplify right side
   22,453.80x = 383,659,728.29
5. Step 5: Solve for x
   x = 383,659,728.29/22,453.80
6. Step 6: Final answer
   x = 17,086.63