Finding the Fourth Proportional to 23,428.88, 32,331.78 and 12,818.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,428.88 : 32,331.78 = 12,818.42 : x
2. Step 2: Convert to fraction form
   23,428.88/32,331.78 = 12,818.42/x
3. Step 3: Cross multiply
   23,428.88x = 32,331.78 × 12,818.42
4. Step 4: Simplify right side
   23,428.88x = 414,442,335.39
5. Step 5: Solve for x
   x = 414,442,335.39/23,428.88
6. Step 6: Final answer
   x = 17,689.38