Finding the Fourth Proportional to 22,456.48, 30,991.70 and 12,385.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.48 : 30,991.70 = 12,385.84 : x
2. Step 2: Convert to fraction form
   22,456.48/30,991.70 = 12,385.84/x
3. Step 3: Cross multiply
   22,456.48x = 30,991.70 × 12,385.84
4. Step 4: Simplify right side
   22,456.48x = 383,858,237.53
5. Step 5: Solve for x
   x = 383,858,237.53/22,456.48
6. Step 6: Final answer
   x = 17,093.43