Finding the Fourth Proportional to 13,289.29, 19,933.90 and 3,929.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,289.29 : 19,933.90 = 3,929.42 : x
2. Step 2: Convert to fraction form
   13,289.29/19,933.90 = 3,929.42/x
3. Step 3: Cross multiply
   13,289.29x = 19,933.90 × 3,929.42
4. Step 4: Simplify right side
   13,289.29x = 78,328,665.34
5. Step 5: Solve for x
   x = 78,328,665.34/13,289.29
6. Step 6: Final answer
   x = 5,894.12