Finding the Fourth Proportional to 23,590.90, 32,555.32 and 12,980.49

Step by Step Solution

1. Step 1: Write the proportion equation
   23,590.90 : 32,555.32 = 12,980.49 : x
2. Step 2: Convert to fraction form
   23,590.90/32,555.32 = 12,980.49/x
3. Step 3: Cross multiply
   23,590.90x = 32,555.32 × 12,980.49
4. Step 4: Simplify right side
   23,590.90x = 422,584,005.71
5. Step 5: Solve for x
   x = 422,584,005.71/23,590.90
6. Step 6: Final answer
   x = 17,913.01