Finding the Fourth Proportional to 23,501.59, 32,431.82 and 12,891.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,501.59 : 32,431.82 = 12,891.60 : x
2. Step 2: Convert to fraction form
   23,501.59/32,431.82 = 12,891.60/x
3. Step 3: Cross multiply
   23,501.59x = 32,431.82 × 12,891.60
4. Step 4: Simplify right side
   23,501.59x = 418,097,986.25
5. Step 5: Solve for x
   x = 418,097,986.25/23,501.59
6. Step 6: Final answer
   x = 17,790.20