Finding the Fourth Proportional to 9,919.33, 14,879.06 and 3,345.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,919.33 : 14,879.06 = 3,345.57 : x
2. Step 2: Convert to fraction form
   9,919.33/14,879.06 = 3,345.57/x
3. Step 3: Cross multiply
   9,919.33x = 14,879.06 × 3,345.57
4. Step 4: Simplify right side
   9,919.33x = 49,778,932.58
5. Step 5: Solve for x
   x = 49,778,932.58/9,919.33
6. Step 6: Final answer
   x = 5,018.38