Finding the Fourth Proportional to 23,398.68, 32,290.10 and 12,788.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,398.68 : 32,290.10 = 12,788.31 : x
2. Step 2: Convert to fraction form
   23,398.68/32,290.10 = 12,788.31/x
3. Step 3: Cross multiply
   23,398.68x = 32,290.10 × 12,788.31
4. Step 4: Simplify right side
   23,398.68x = 412,935,808.73
5. Step 5: Solve for x
   x = 412,935,808.73/23,398.68
6. Step 6: Final answer
   x = 17,647.82