Finding the Fourth Proportional to 30,767.72, 42,459.40 and 16,620.52

Step by Step Solution

1. Step 1: Write the proportion equation
   30,767.72 : 42,459.40 = 16,620.52 : x
2. Step 2: Convert to fraction form
   30,767.72/42,459.40 = 16,620.52/x
3. Step 3: Cross multiply
   30,767.72x = 42,459.40 × 16,620.52
4. Step 4: Simplify right side
   30,767.72x = 705,697,306.89
5. Step 5: Solve for x
   x = 705,697,306.89/30,767.72
6. Step 6: Final answer
   x = 22,936.29