Finding the Fourth Proportional to 30,836.50, 42,554.38 and 16,689.34

Step by Step Solution

1. Step 1: Write the proportion equation
   30,836.50 : 42,554.38 = 16,689.34 : x
2. Step 2: Convert to fraction form
   30,836.50/42,554.38 = 16,689.34/x
3. Step 3: Cross multiply
   30,836.50x = 42,554.38 × 16,689.34
4. Step 4: Simplify right side
   30,836.50x = 710,204,516.31
5. Step 5: Solve for x
   x = 710,204,516.31/30,836.50
6. Step 6: Final answer
   x = 23,031.29