Finding the Fourth Proportional to 23,519.31, 32,455.89 and 13,447.57

Step by Step Solution

1. Step 1: Write the proportion equation
   23,519.31 : 32,455.89 = 13,447.57 : x
2. Step 2: Convert to fraction form
   23,519.31/32,455.89 = 13,447.57/x
3. Step 3: Cross multiply
   23,519.31x = 32,455.89 × 13,447.57
4. Step 4: Simplify right side
   23,519.31x = 436,452,832.40
5. Step 5: Solve for x
   x = 436,452,832.40/23,519.31
6. Step 6: Final answer
   x = 18,557.21