Finding the Fourth Proportional to 28,453.02, 42,684.17 and 10,685.06

Step by Step Solution

1. Step 1: Write the proportion equation
   28,453.02 : 42,684.17 = 10,685.06 : x
2. Step 2: Convert to fraction form
   28,453.02/42,684.17 = 10,685.06/x
3. Step 3: Cross multiply
   28,453.02x = 42,684.17 × 10,685.06
4. Step 4: Simplify right side
   28,453.02x = 456,082,650.65
5. Step 5: Solve for x
   x = 456,082,650.65/28,453.02
6. Step 6: Final answer
   x = 16,029.32