Finding the Fourth Proportional to 57,726.96, 86,605.72 and 18,284.72

Step by Step Solution

1. Step 1: Write the proportion equation
   57,726.96 : 86,605.72 = 18,284.72 : x
2. Step 2: Convert to fraction form
   57,726.96/86,605.72 = 18,284.72/x
3. Step 3: Cross multiply
   57,726.96x = 86,605.72 × 18,284.72
4. Step 4: Simplify right side
   57,726.96x = 1,583,561,340.60
5. Step 5: Solve for x
   x = 1,583,561,340.60/57,726.96
6. Step 6: Final answer
   x = 27,431.92