Finding the Fourth Proportional to 23,398.72, 32,290.18 and 12,788.35

Step by Step Solution

1. Step 1: Write the proportion equation
   23,398.72 : 32,290.18 = 12,788.35 : x
2. Step 2: Convert to fraction form
   23,398.72/32,290.18 = 12,788.35/x
3. Step 3: Cross multiply
   23,398.72x = 32,290.18 × 12,788.35
4. Step 4: Simplify right side
   23,398.72x = 412,938,010.71
5. Step 5: Solve for x
   x = 412,938,010.71/23,398.72
6. Step 6: Final answer
   x = 17,647.89