Finding the Fourth Proportional to 17,489.05, 26,238.69 and 5,642.59

Step by Step Solution

1. Step 1: Write the proportion equation
   17,489.05 : 26,238.69 = 5,642.59 : x
2. Step 2: Convert to fraction form
   17,489.05/26,238.69 = 5,642.59/x
3. Step 3: Cross multiply
   17,489.05x = 26,238.69 × 5,642.59
4. Step 4: Simplify right side
   17,489.05x = 148,054,169.81
5. Step 5: Solve for x
   x = 148,054,169.81/17,489.05
6. Step 6: Final answer
   x = 8,465.54