Finding the Fourth Proportional to 23,491.36, 32,418.56 and 12,880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,491.36 : 32,418.56 = 12,880.72 : x
2. Step 2: Convert to fraction form
   23,491.36/32,418.56 = 12,880.72/x
3. Step 3: Cross multiply
   23,491.36x = 32,418.56 × 12,880.72
4. Step 4: Simplify right side
   23,491.36x = 417,574,394.16
5. Step 5: Solve for x
   x = 417,574,394.16/23,491.36
6. Step 6: Final answer
   x = 17,775.66