Finding the Fourth Proportional to 28,369.94, 42,557.73 and 10,854.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,369.94 : 42,557.73 = 10,854.50 : x
2. Step 2: Convert to fraction form
   28,369.94/42,557.73 = 10,854.50/x
3. Step 3: Cross multiply
   28,369.94x = 42,557.73 × 10,854.50
4. Step 4: Simplify right side
   28,369.94x = 461,942,880.29
5. Step 5: Solve for x
   x = 461,942,880.29/28,369.94
6. Step 6: Final answer
   x = 16,282.83