Finding the Fourth Proportional to 57,815.23, 86,721.89 and 17,288.84

Step by Step Solution

1. Step 1: Write the proportion equation
   57,815.23 : 86,721.89 = 17,288.84 : x
2. Step 2: Convert to fraction form
   57,815.23/86,721.89 = 17,288.84/x
3. Step 3: Cross multiply
   57,815.23x = 86,721.89 × 17,288.84
4. Step 4: Simplify right side
   57,815.23x = 1,499,320,880.71
5. Step 5: Solve for x
   x = 1,499,320,880.71/57,815.23
6. Step 6: Final answer
   x = 25,932.97