Finding the Fourth Proportional to 23,530.69, 32,472.24 and 12,920.23

Step by Step Solution

1. Step 1: Write the proportion equation
   23,530.69 : 32,472.24 = 12,920.23 : x
2. Step 2: Convert to fraction form
   23,530.69/32,472.24 = 12,920.23/x
3. Step 3: Cross multiply
   23,530.69x = 32,472.24 × 12,920.23
4. Step 4: Simplify right side
   23,530.69x = 419,548,809.42
5. Step 5: Solve for x
   x = 419,548,809.42/23,530.69
6. Step 6: Final answer
   x = 17,829.86