Finding the Fourth Proportional to 23,388.68, 32,276.34 and 12,778.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,388.68 : 32,276.34 = 12,778.31 : x
2. Step 2: Convert to fraction form
   23,388.68/32,276.34 = 12,778.31/x
3. Step 3: Cross multiply
   23,388.68x = 32,276.34 × 12,778.31
4. Step 4: Simplify right side
   23,388.68x = 412,437,078.19
5. Step 5: Solve for x
   x = 412,437,078.19/23,388.68
6. Step 6: Final answer
   x = 17,634.05