Finding the Fourth Proportional to 9,112.36, 12,573.54 and 5,078.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.36 : 12,573.54 = 5,078.31 : x
2. Step 2: Convert to fraction form
   9,112.36/12,573.54 = 5,078.31/x
3. Step 3: Cross multiply
   9,112.36x = 12,573.54 × 5,078.31
4. Step 4: Simplify right side
   9,112.36x = 63,852,305.50
5. Step 5: Solve for x
   x = 63,852,305.50/9,112.36
6. Step 6: Final answer
   x = 7,007.22