Finding the Fourth Proportional to 21,914.04, 30,244.32 and 12,355.81

Step by Step Solution

1. Step 1: Write the proportion equation
   21,914.04 : 30,244.32 = 12,355.81 : x
2. Step 2: Convert to fraction form
   21,914.04/30,244.32 = 12,355.81/x
3. Step 3: Cross multiply
   21,914.04x = 30,244.32 × 12,355.81
4. Step 4: Simplify right side
   21,914.04x = 373,692,995.89
5. Step 5: Solve for x
   x = 373,692,995.89/21,914.04
6. Step 6: Final answer
   x = 17,052.67