Finding the Fourth Proportional to 23,635.50, 32,616.56 and 12,880.47

Step by Step Solution

1. Step 1: Write the proportion equation
   23,635.50 : 32,616.56 = 12,880.47 : x
2. Step 2: Convert to fraction form
   23,635.50/32,616.56 = 12,880.47/x
3. Step 3: Cross multiply
   23,635.50x = 32,616.56 × 12,880.47
4. Step 4: Simplify right side
   23,635.50x = 420,116,459.50
5. Step 5: Solve for x
   x = 420,116,459.50/23,635.50
6. Step 6: Final answer
   x = 17,774.81