Finding the Fourth Proportional to 11,009.97, 16,509.47 and 3,613.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,009.97 : 16,509.47 = 3,613.59 : x
2. Step 2: Convert to fraction form
   11,009.97/16,509.47 = 3,613.59/x
3. Step 3: Cross multiply
   11,009.97x = 16,509.47 × 3,613.59
4. Step 4: Simplify right side
   11,009.97x = 59,658,437.63
5. Step 5: Solve for x
   x = 59,658,437.63/11,009.97
6. Step 6: Final answer
   x = 5,418.58