Finding the Fourth Proportional to 23,399.17, 32,290.86 and 12,788.81

Step by Step Solution

1. Step 1: Write the proportion equation
   23,399.17 : 32,290.86 = 12,788.81 : x
2. Step 2: Convert to fraction form
   23,399.17/32,290.86 = 12,788.81/x
3. Step 3: Cross multiply
   23,399.17x = 32,290.86 × 12,788.81
4. Step 4: Simplify right side
   23,399.17x = 412,961,673.28
5. Step 5: Solve for x
   x = 412,961,673.28/23,399.17
6. Step 6: Final answer
   x = 17,648.56