Finding the Fourth Proportional to 23,530.38, 32,471.96 and 12,920.69

Step by Step Solution

1. Step 1: Write the proportion equation
   23,530.38 : 32,471.96 = 12,920.69 : x
2. Step 2: Convert to fraction form
   23,530.38/32,471.96 = 12,920.69/x
3. Step 3: Cross multiply
   23,530.38x = 32,471.96 × 12,920.69
4. Step 4: Simplify right side
   23,530.38x = 419,560,128.85
5. Step 5: Solve for x
   x = 419,560,128.85/23,530.38
6. Step 6: Final answer
   x = 17,830.57