Finding the Fourth Proportional to 17,509.53, 26,249.61 and 7,641.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,509.53 : 26,249.61 = 7,641.30 : x
2. Step 2: Convert to fraction form
   17,509.53/26,249.61 = 7,641.30/x
3. Step 3: Cross multiply
   17,509.53x = 26,249.61 × 7,641.30
4. Step 4: Simplify right side
   17,509.53x = 200,581,144.89
5. Step 5: Solve for x
   x = 200,581,144.89/17,509.53
6. Step 6: Final answer
   x = 11,455.54