Finding the Fourth Proportional to 16,861.98, 23,269.60 and 9,308.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,861.98 : 23,269.60 = 9,308.38 : x
2. Step 2: Convert to fraction form
   16,861.98/23,269.60 = 9,308.38/x
3. Step 3: Cross multiply
   16,861.98x = 23,269.60 × 9,308.38
4. Step 4: Simplify right side
   16,861.98x = 216,602,279.25
5. Step 5: Solve for x
   x = 216,602,279.25/16,861.98
6. Step 6: Final answer
   x = 12,845.60