Finding the Fourth Proportional to 11,390.66, 17,085.89 and 3,599.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,390.66 : 17,085.89 = 3,599.48 : x
2. Step 2: Convert to fraction form
   11,390.66/17,085.89 = 3,599.48/x
3. Step 3: Cross multiply
   11,390.66x = 17,085.89 × 3,599.48
4. Step 4: Simplify right side
   11,390.66x = 61,500,215.91
5. Step 5: Solve for x
   x = 61,500,215.91/11,390.66
6. Step 6: Final answer
   x = 5,399.18