Finding the Fourth Proportional to 17,642.58, 26,458.56 and 7,109.22

Step by Step Solution

1. Step 1: Write the proportion equation
   17,642.58 : 26,458.56 = 7,109.22 : x
2. Step 2: Convert to fraction form
   17,642.58/26,458.56 = 7,109.22/x
3. Step 3: Cross multiply
   17,642.58x = 26,458.56 × 7,109.22
4. Step 4: Simplify right side
   17,642.58x = 188,099,723.92
5. Step 5: Solve for x
   x = 188,099,723.92/17,642.58
6. Step 6: Final answer
   x = 10,661.69