Finding the Fourth Proportional to 23,289.34, 32,139.41 and 12,679.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,289.34 : 32,139.41 = 12,679.05 : x
2. Step 2: Convert to fraction form
   23,289.34/32,139.41 = 12,679.05/x
3. Step 3: Cross multiply
   23,289.34x = 32,139.41 × 12,679.05
4. Step 4: Simplify right side
   23,289.34x = 407,497,074.31
5. Step 5: Solve for x
   x = 407,497,074.31/23,289.34
6. Step 6: Final answer
   x = 17,497.15