Finding the Fourth Proportional to 10,443.96, 15,635.16 and 9,147.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,443.96 : 15,635.16 = 9,147.96 : x
2. Step 2: Convert to fraction form
   10,443.96/15,635.16 = 9,147.96/x
3. Step 3: Cross multiply
   10,443.96x = 15,635.16 × 9,147.96
4. Step 4: Simplify right side
   10,443.96x = 143,029,818.27
5. Step 5: Solve for x
   x = 143,029,818.27/10,443.96
6. Step 6: Final answer
   x = 13,694.98