Finding the Fourth Proportional to 12,480.30, 18,701.96 and 5,453.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,480.30 : 18,701.96 = 5,453.82 : x
2. Step 2: Convert to fraction form
   12,480.30/18,701.96 = 5,453.82/x
3. Step 3: Cross multiply
   12,480.30x = 18,701.96 × 5,453.82
4. Step 4: Simplify right side
   12,480.30x = 101,997,096.22
5. Step 5: Solve for x
   x = 101,997,096.22/12,480.30
6. Step 6: Final answer
   x = 8,172.65