Finding the Fourth Proportional to 30,776.01, 42,470.76 and 16,628.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,776.01 : 42,470.76 = 16,628.82 : x
2. Step 2: Convert to fraction form
   30,776.01/42,470.76 = 16,628.82/x
3. Step 3: Cross multiply
   30,776.01x = 42,470.76 × 16,628.82
4. Step 4: Simplify right side
   30,776.01x = 706,238,623.30
5. Step 5: Solve for x
   x = 706,238,623.30/30,776.01
6. Step 6: Final answer
   x = 22,947.70