Finding the Fourth Proportional to 23,289.46, 32,139.59 and 12,679.07

Step by Step Solution

1. Step 1: Write the proportion equation
   23,289.46 : 32,139.59 = 12,679.07 : x
2. Step 2: Convert to fraction form
   23,289.46/32,139.59 = 12,679.07/x
3. Step 3: Cross multiply
   23,289.46x = 32,139.59 × 12,679.07
4. Step 4: Simplify right side
   23,289.46x = 407,499,887.29
5. Step 5: Solve for x
   x = 407,499,887.29/23,289.46
6. Step 6: Final answer
   x = 17,497.18