Finding the Fourth Proportional to 9,427.76, 14,072.72 and 8,742.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,427.76 : 14,072.72 = 8,742.48 : x
2. Step 2: Convert to fraction form
   9,427.76/14,072.72 = 8,742.48/x
3. Step 3: Cross multiply
   9,427.76x = 14,072.72 × 8,742.48
4. Step 4: Simplify right side
   9,427.76x = 123,030,473.15
5. Step 5: Solve for x
   x = 123,030,473.15/9,427.76
6. Step 6: Final answer
   x = 13,049.81