Finding the Fourth Proportional to 23,590.69, 32,555.45 and 12,980.09

Step by Step Solution

1. Step 1: Write the proportion equation
   23,590.69 : 32,555.45 = 12,980.09 : x
2. Step 2: Convert to fraction form
   23,590.69/32,555.45 = 12,980.09/x
3. Step 3: Cross multiply
   23,590.69x = 32,555.45 × 12,980.09
4. Step 4: Simplify right side
   23,590.69x = 422,572,784.83
5. Step 5: Solve for x
   x = 422,572,784.83/23,590.69
6. Step 6: Final answer
   x = 17,912.69