Finding the Fourth Proportional to 13,079.41, 18,049.94 and 7,111.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,079.41 : 18,049.94 = 7,111.48 : x
2. Step 2: Convert to fraction form
   13,079.41/18,049.94 = 7,111.48/x
3. Step 3: Cross multiply
   13,079.41x = 18,049.94 × 7,111.48
4. Step 4: Simplify right side
   13,079.41x = 128,361,787.31
5. Step 5: Solve for x
   x = 128,361,787.31/13,079.41
6. Step 6: Final answer
   x = 9,814.03