Finding the Fourth Proportional to 11,591.42, 17,388.48 and 3,691.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,591.42 : 17,388.48 = 3,691.17 : x
2. Step 2: Convert to fraction form
   11,591.42/17,388.48 = 3,691.17/x
3. Step 3: Cross multiply
   11,591.42x = 17,388.48 × 3,691.17
4. Step 4: Simplify right side
   11,591.42x = 64,183,835.72
5. Step 5: Solve for x
   x = 64,183,835.72/11,591.42
6. Step 6: Final answer
   x = 5,537.19