Finding the Fourth Proportional to 30,836.33, 42,554.18 and 16,689.17

Step by Step Solution

1. Step 1: Write the proportion equation
   30,836.33 : 42,554.18 = 16,689.17 : x
2. Step 2: Convert to fraction form
   30,836.33/42,554.18 = 16,689.17/x
3. Step 3: Cross multiply
   30,836.33x = 42,554.18 × 16,689.17
4. Step 4: Simplify right side
   30,836.33x = 710,193,967.17
5. Step 5: Solve for x
   x = 710,193,967.17/30,836.33
6. Step 6: Final answer
   x = 23,031.08