Finding the Fourth Proportional to 23,147.39, 34,707.71 and 20,379.62

Step by Step Solution

1. Step 1: Write the proportion equation
   23,147.39 : 34,707.71 = 20,379.62 : x
2. Step 2: Convert to fraction form
   23,147.39/34,707.71 = 20,379.62/x
3. Step 3: Cross multiply
   23,147.39x = 34,707.71 × 20,379.62
4. Step 4: Simplify right side
   23,147.39x = 707,329,665.43
5. Step 5: Solve for x
   x = 707,329,665.43/23,147.39
6. Step 6: Final answer
   x = 30,557.65