Finding the Fourth Proportional to 59,638.88, 89,458.56 and 18,086.24

Step by Step Solution

1. Step 1: Write the proportion equation
   59,638.88 : 89,458.56 = 18,086.24 : x
2. Step 2: Convert to fraction form
   59,638.88/89,458.56 = 18,086.24/x
3. Step 3: Cross multiply
   59,638.88x = 89,458.56 × 18,086.24
4. Step 4: Simplify right side
   59,638.88x = 1,617,968,986.21
5. Step 5: Solve for x
   x = 1,617,968,986.21/59,638.88
6. Step 6: Final answer
   x = 27,129.43