Finding the Fourth Proportional to 20,597.94, 30,899.34 and 15,436.62

Step by Step Solution

1. Step 1: Write the proportion equation
   20,597.94 : 30,899.34 = 15,436.62 : x
2. Step 2: Convert to fraction form
   20,597.94/30,899.34 = 15,436.62/x
3. Step 3: Cross multiply
   20,597.94x = 30,899.34 × 15,436.62
4. Step 4: Simplify right side
   20,597.94x = 476,981,369.83
5. Step 5: Solve for x
   x = 476,981,369.83/20,597.94
6. Step 6: Final answer
   x = 23,156.75