Finding the Fourth Proportional to 28,740.18, 39,659.31 and 16,162.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,740.18 : 39,659.31 = 16,162.50 : x
2. Step 2: Convert to fraction form
   28,740.18/39,659.31 = 16,162.50/x
3. Step 3: Cross multiply
   28,740.18x = 39,659.31 × 16,162.50
4. Step 4: Simplify right side
   28,740.18x = 640,993,597.88
5. Step 5: Solve for x
   x = 640,993,597.88/28,740.18
6. Step 6: Final answer
   x = 22,303.05