Finding the Fourth Proportional to 23,290.39, 32,139.73 and 12,680.06

Step by Step Solution

1. Step 1: Write the proportion equation
   23,290.39 : 32,139.73 = 12,680.06 : x
2. Step 2: Convert to fraction form
   23,290.39/32,139.73 = 12,680.06/x
3. Step 3: Cross multiply
   23,290.39x = 32,139.73 × 12,680.06
4. Step 4: Simplify right side
   23,290.39x = 407,533,704.78
5. Step 5: Solve for x
   x = 407,533,704.78/23,290.39
6. Step 6: Final answer
   x = 17,497.93