Finding the Fourth Proportional to 30,769.88, 42,462.47 and 16,622.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,769.88 : 42,462.47 = 16,622.72 : x
2. Step 2: Convert to fraction form
   30,769.88/42,462.47 = 16,622.72/x
3. Step 3: Cross multiply
   30,769.88x = 42,462.47 × 16,622.72
4. Step 4: Simplify right side
   30,769.88x = 705,841,749.32
5. Step 5: Solve for x
   x = 705,841,749.32/30,769.88
6. Step 6: Final answer
   x = 22,939.37