Finding the Fourth Proportional to 28,359.37, 42,537.50 and 8,636.27

Step by Step Solution

1. Step 1: Write the proportion equation
   28,359.37 : 42,537.50 = 8,636.27 : x
2. Step 2: Convert to fraction form
   28,359.37/42,537.50 = 8,636.27/x
3. Step 3: Cross multiply
   28,359.37x = 42,537.50 × 8,636.27
4. Step 4: Simplify right side
   28,359.37x = 367,365,291.94
5. Step 5: Solve for x
   x = 367,365,291.94/28,359.37
6. Step 6: Final answer
   x = 12,953.93