Finding the Fourth Proportional to 10,269.72, 14,146.38 and 9,513.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,269.72 : 14,146.38 = 9,513.72 : x
2. Step 2: Convert to fraction form
   10,269.72/14,146.38 = 9,513.72/x
3. Step 3: Cross multiply
   10,269.72x = 14,146.38 × 9,513.72
4. Step 4: Simplify right side
   10,269.72x = 134,584,698.33
5. Step 5: Solve for x
   x = 134,584,698.33/10,269.72
6. Step 6: Final answer
   x = 13,105.00