Finding the Fourth Proportional to 31,596.42, 47,403.42 and 13,823.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,596.42 : 47,403.42 = 13,823.91 : x
2. Step 2: Convert to fraction form
   31,596.42/47,403.42 = 13,823.91/x
3. Step 3: Cross multiply
   31,596.42x = 47,403.42 × 13,823.91
4. Step 4: Simplify right side
   31,596.42x = 655,300,611.77
5. Step 5: Solve for x
   x = 655,300,611.77/31,596.42
6. Step 6: Final answer
   x = 20,739.71