Finding the Fourth Proportional to 28,216.24, 42,287.52 and 15,735.76

Step by Step Solution

1. Step 1: Write the proportion equation
   28,216.24 : 42,287.52 = 15,735.76 : x
2. Step 2: Convert to fraction form
   28,216.24/42,287.52 = 15,735.76/x
3. Step 3: Cross multiply
   28,216.24x = 42,287.52 × 15,735.76
4. Step 4: Simplify right side
   28,216.24x = 665,426,265.72
5. Step 5: Solve for x
   x = 665,426,265.72/28,216.24
6. Step 6: Final answer
   x = 23,583.09