Finding the Fourth Proportional to 11,612.73, 17,415.38 and 3,819.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,612.73 : 17,415.38 = 3,819.69 : x
2. Step 2: Convert to fraction form
   11,612.73/17,415.38 = 3,819.69/x
3. Step 3: Cross multiply
   11,612.73x = 17,415.38 × 3,819.69
4. Step 4: Simplify right side
   11,612.73x = 66,521,333.73
5. Step 5: Solve for x
   x = 66,521,333.73/11,612.73
6. Step 6: Final answer
   x = 5,728.31