Finding the Fourth Proportional to 23,704.56, 32,712.24 and 15,321

Step by Step Solution

1. Step 1: Write the proportion equation
   23,704.56 : 32,712.24 = 15,321 : x
2. Step 2: Convert to fraction form
   23,704.56/32,712.24 = 15,321/x
3. Step 3: Cross multiply
   23,704.56x = 32,712.24 × 15,321
4. Step 4: Simplify right side
   23,704.56x = 501,184,229.04
5. Step 5: Solve for x
   x = 501,184,229.04/23,704.56
6. Step 6: Final answer
   x = 21,142.95