Finding the Fourth Proportional to 47,456.34, 71,185.20 and 12,396

Step by Step Solution

1. Step 1: Write the proportion equation
   47,456.34 : 71,185.20 = 12,396 : x
2. Step 2: Convert to fraction form
   47,456.34/71,185.20 = 12,396/x
3. Step 3: Cross multiply
   47,456.34x = 71,185.20 × 12,396
4. Step 4: Simplify right side
   47,456.34x = 882,411,739.20
5. Step 5: Solve for x
   x = 882,411,739.20/47,456.34
6. Step 6: Final answer
   x = 18,594.18