Finding the Fourth Proportional to 30,951.59, 42,748.37 and 20,862.62

Step by Step Solution

1. Step 1: Write the proportion equation
   30,951.59 : 42,748.37 = 20,862.62 : x
2. Step 2: Convert to fraction form
   30,951.59/42,748.37 = 20,862.62/x
3. Step 3: Cross multiply
   30,951.59x = 42,748.37 × 20,862.62
4. Step 4: Simplify right side
   30,951.59x = 891,842,894.62
5. Step 5: Solve for x
   x = 891,842,894.62/30,951.59
6. Step 6: Final answer
   x = 28,814.12