Finding the Fourth Proportional to 30,716.52, 42,390.90 and 17,289.06

Step by Step Solution

1. Step 1: Write the proportion equation
   30,716.52 : 42,390.90 = 17,289.06 : x
2. Step 2: Convert to fraction form
   30,716.52/42,390.90 = 17,289.06/x
3. Step 3: Cross multiply
   30,716.52x = 42,390.90 × 17,289.06
4. Step 4: Simplify right side
   30,716.52x = 732,898,813.55
5. Step 5: Solve for x
   x = 732,898,813.55/30,716.52
6. Step 6: Final answer
   x = 23,860.09