Finding the Fourth Proportional to 20,596.34, 31,046.78 and 19,392.30

Step by Step Solution

1. Step 1: Write the proportion equation
   20,596.34 : 31,046.78 = 19,392.30 : x
2. Step 2: Convert to fraction form
   20,596.34/31,046.78 = 19,392.30/x
3. Step 3: Cross multiply
   20,596.34x = 31,046.78 × 19,392.30
4. Step 4: Simplify right side
   20,596.34x = 602,068,374.83
5. Step 5: Solve for x
   x = 602,068,374.83/20,596.34
6. Step 6: Final answer
   x = 29,231.82