Finding the Fourth Proportional to 30,986.12, 42,760.72 and 17,559.93

Step by Step Solution

1. Step 1: Write the proportion equation
   30,986.12 : 42,760.72 = 17,559.93 : x
2. Step 2: Convert to fraction form
   30,986.12/42,760.72 = 17,559.93/x
3. Step 3: Cross multiply
   30,986.12x = 42,760.72 × 17,559.93
4. Step 4: Simplify right side
   30,986.12x = 750,875,249.95
5. Step 5: Solve for x
   x = 750,875,249.95/30,986.12
6. Step 6: Final answer
   x = 24,232.63