Finding the Fourth Proportional to 30,920.25, 42,669.96 and 17,491.22

Step by Step Solution

1. Step 1: Write the proportion equation
   30,920.25 : 42,669.96 = 17,491.22 : x
2. Step 2: Convert to fraction form
   30,920.25/42,669.96 = 17,491.22/x
3. Step 3: Cross multiply
   30,920.25x = 42,669.96 × 17,491.22
4. Step 4: Simplify right side
   30,920.25x = 746,349,538.82
5. Step 5: Solve for x
   x = 746,349,538.82/30,920.25
6. Step 6: Final answer
   x = 24,137.89