Finding the Fourth Proportional to 23,585.42, 32,561.31 and 15,638.39

Step by Step Solution

1. Step 1: Write the proportion equation
   23,585.42 : 32,561.31 = 15,638.39 : x
2. Step 2: Convert to fraction form
   23,585.42/32,561.31 = 15,638.39/x
3. Step 3: Cross multiply
   23,585.42x = 32,561.31 × 15,638.39
4. Step 4: Simplify right side
   23,585.42x = 509,206,301.88
5. Step 5: Solve for x
   x = 509,206,301.88/23,585.42
6. Step 6: Final answer
   x = 21,589.88