Finding the Fourth Proportional to 23,638.30, 32,621.54 and 13,028.62

Step by Step Solution

1. Step 1: Write the proportion equation
   23,638.30 : 32,621.54 = 13,028.62 : x
2. Step 2: Convert to fraction form
   23,638.30/32,621.54 = 13,028.62/x
3. Step 3: Cross multiply
   23,638.30x = 32,621.54 × 13,028.62
4. Step 4: Simplify right side
   23,638.30x = 425,013,648.47
5. Step 5: Solve for x
   x = 425,013,648.47/23,638.30
6. Step 6: Final answer
   x = 17,979.87