Finding the Fourth Proportional to 11,070.47, 16,605.78 and 3,279.35

Step by Step Solution

1. Step 1: Write the proportion equation
   11,070.47 : 16,605.78 = 3,279.35 : x
2. Step 2: Convert to fraction form
   11,070.47/16,605.78 = 3,279.35/x
3. Step 3: Cross multiply
   11,070.47x = 16,605.78 × 3,279.35
4. Step 4: Simplify right side
   11,070.47x = 54,456,164.64
5. Step 5: Solve for x
   x = 54,456,164.64/11,070.47
6. Step 6: Final answer
   x = 4,919.05