Finding the Fourth Proportional to 28,627.27, 42,885.25 and 16,109.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,627.27 : 42,885.25 = 16,109.12 : x
2. Step 2: Convert to fraction form
   28,627.27/42,885.25 = 16,109.12/x
3. Step 3: Cross multiply
   28,627.27x = 42,885.25 × 16,109.12
4. Step 4: Simplify right side
   28,627.27x = 690,843,638.48
5. Step 5: Solve for x
   x = 690,843,638.48/28,627.27
6. Step 6: Final answer
   x = 24,132.36