Finding the Fourth Proportional to 12,462.80, 17,198.50 and 7,157.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,462.80 : 17,198.50 = 7,157.48 : x
2. Step 2: Convert to fraction form
   12,462.80/17,198.50 = 7,157.48/x
3. Step 3: Cross multiply
   12,462.80x = 17,198.50 × 7,157.48
4. Step 4: Simplify right side
   12,462.80x = 123,097,919.78
5. Step 5: Solve for x
   x = 123,097,919.78/12,462.80
6. Step 6: Final answer
   x = 9,877.23