Finding the Fourth Proportional to 23,509.91, 32,443.43 and 12,899.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,509.91 : 32,443.43 = 12,899.54 : x
2. Step 2: Convert to fraction form
   23,509.91/32,443.43 = 12,899.54/x
3. Step 3: Cross multiply
   23,509.91x = 32,443.43 × 12,899.54
4. Step 4: Simplify right side
   23,509.91x = 418,505,339.63
5. Step 5: Solve for x
   x = 418,505,339.63/23,509.91
6. Step 6: Final answer
   x = 17,801.23