Finding the Fourth Proportional to 23,579.87, 32,540.28 and 12,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,579.87 : 32,540.28 = 12,969.50 : x
2. Step 2: Convert to fraction form
   23,579.87/32,540.28 = 12,969.50/x
3. Step 3: Cross multiply
   23,579.87x = 32,540.28 × 12,969.50
4. Step 4: Simplify right side
   23,579.87x = 422,030,998.76
5. Step 5: Solve for x
   x = 422,030,998.76/23,579.87
6. Step 6: Final answer
   x = 17,897.94