Finding the Fourth Proportional to 23,680.32, 32,678.78 and 13,069.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,680.32 : 32,678.78 = 13,069.88 : x
2. Step 2: Convert to fraction form
   23,680.32/32,678.78 = 13,069.88/x
3. Step 3: Cross multiply
   23,680.32x = 32,678.78 × 13,069.88
4. Step 4: Simplify right side
   23,680.32x = 427,107,504.40
5. Step 5: Solve for x
   x = 427,107,504.40/23,680.32
6. Step 6: Final answer
   x = 18,036.39