Finding the Fourth Proportional to 13,228, 19,845.30 and 3,994

Step by Step Solution

1. Step 1: Write the proportion equation
   13,228 : 19,845.30 = 3,994 : x
2. Step 2: Convert to fraction form
   13,228/19,845.30 = 3,994/x
3. Step 3: Cross multiply
   13,228x = 19,845.30 × 3,994
4. Step 4: Simplify right side
   13,228x = 79,262,128.20
5. Step 5: Solve for x
   x = 79,262,128.20/13,228
6. Step 6: Final answer
   x = 5,992.00