Finding the Fourth Proportional to 30,947.71, 42,708.72 and 16,801.48

Step by Step Solution

1. Step 1: Write the proportion equation
   30,947.71 : 42,708.72 = 16,801.48 : x
2. Step 2: Convert to fraction form
   30,947.71/42,708.72 = 16,801.48/x
3. Step 3: Cross multiply
   30,947.71x = 42,708.72 × 16,801.48
4. Step 4: Simplify right side
   30,947.71x = 717,569,704.91
5. Step 5: Solve for x
   x = 717,569,704.91/30,947.71
6. Step 6: Final answer
   x = 23,186.52