Finding the Fourth Proportional to 22,411.04, 30,928.56 and 12,982.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,411.04 : 30,928.56 = 12,982.88 : x
2. Step 2: Convert to fraction form
   22,411.04/30,928.56 = 12,982.88/x
3. Step 3: Cross multiply
   22,411.04x = 30,928.56 × 12,982.88
4. Step 4: Simplify right side
   22,411.04x = 401,541,783.05
5. Step 5: Solve for x
   x = 401,541,783.05/22,411.04
6. Step 6: Final answer
   x = 17,917.14