Finding the Fourth Proportional to 23,398.47, 32,289.89 and 12,788.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,398.47 : 32,289.89 = 12,788.10 : x
2. Step 2: Convert to fraction form
   23,398.47/32,289.89 = 12,788.10/x
3. Step 3: Cross multiply
   23,398.47x = 32,289.89 × 12,788.10
4. Step 4: Simplify right side
   23,398.47x = 412,926,342.31
5. Step 5: Solve for x
   x = 412,926,342.31/23,398.47
6. Step 6: Final answer
   x = 17,647.58