Finding the Fourth Proportional to 23,608.89, 32,580.49 and 12,998.91

Step by Step Solution

1. Step 1: Write the proportion equation
   23,608.89 : 32,580.49 = 12,998.91 : x
2. Step 2: Convert to fraction form
   23,608.89/32,580.49 = 12,998.91/x
3. Step 3: Cross multiply
   23,608.89x = 32,580.49 × 12,998.91
4. Step 4: Simplify right side
   23,608.89x = 423,510,714.70
5. Step 5: Solve for x
   x = 423,510,714.70/23,608.89
6. Step 6: Final answer
   x = 17,938.61