Finding the Fourth Proportional to 28,114.17, 42,178.56 and 8,392.73

Step by Step Solution

1. Step 1: Write the proportion equation
   28,114.17 : 42,178.56 = 8,392.73 : x
2. Step 2: Convert to fraction form
   28,114.17/42,178.56 = 8,392.73/x
3. Step 3: Cross multiply
   28,114.17x = 42,178.56 × 8,392.73
4. Step 4: Simplify right side
   28,114.17x = 353,993,054.98
5. Step 5: Solve for x
   x = 353,993,054.98/28,114.17
6. Step 6: Final answer
   x = 12,591.27