Finding the Fourth Proportional to 28,746.18, 39,667.59 and 16,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,746.18 : 39,667.59 = 16,168.50 : x
2. Step 2: Convert to fraction form
   28,746.18/39,667.59 = 16,168.50/x
3. Step 3: Cross multiply
   28,746.18x = 39,667.59 × 16,168.50
4. Step 4: Simplify right side
   28,746.18x = 641,365,428.92
5. Step 5: Solve for x
   x = 641,365,428.92/28,746.18
6. Step 6: Final answer
   x = 22,311.33