Finding the Fourth Proportional to 21,944.16, 30,275.46 and 12,994.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,944.16 : 30,275.46 = 12,994.56 : x
2. Step 2: Convert to fraction form
   21,944.16/30,275.46 = 12,994.56/x
3. Step 3: Cross multiply
   21,944.16x = 30,275.46 × 12,994.56
4. Step 4: Simplify right side
   21,944.16x = 393,416,281.50
5. Step 5: Solve for x
   x = 393,416,281.50/21,944.16
6. Step 6: Final answer
   x = 17,928.06