Finding the Fourth Proportional to 11,591.99, 17,389.34 and 3,691.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,591.99 : 17,389.34 = 3,691.73 : x
2. Step 2: Convert to fraction form
   11,591.99/17,389.34 = 3,691.73/x
3. Step 3: Cross multiply
   11,591.99x = 17,389.34 × 3,691.73
4. Step 4: Simplify right side
   11,591.99x = 64,196,642.75
5. Step 5: Solve for x
   x = 64,196,642.75/11,591.99
6. Step 6: Final answer
   x = 5,538.02