Finding the Fourth Proportional to 13,249.28, 18,280.01 and 7,942.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,249.28 : 18,280.01 = 7,942.16 : x
2. Step 2: Convert to fraction form
   13,249.28/18,280.01 = 7,942.16/x
3. Step 3: Cross multiply
   13,249.28x = 18,280.01 × 7,942.16
4. Step 4: Simplify right side
   13,249.28x = 145,182,672.82
5. Step 5: Solve for x
   x = 145,182,672.82/13,249.28
6. Step 6: Final answer
   x = 10,957.78