Finding the Fourth Proportional to 11,309.96, 16,959.54 and 3,518.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,309.96 : 16,959.54 = 3,518.84 : x
2. Step 2: Convert to fraction form
   11,309.96/16,959.54 = 3,518.84/x
3. Step 3: Cross multiply
   11,309.96x = 16,959.54 × 3,518.84
4. Step 4: Simplify right side
   11,309.96x = 59,677,907.73
5. Step 5: Solve for x
   x = 59,677,907.73/11,309.96
6. Step 6: Final answer
   x = 5,276.58