Finding the Fourth Proportional to 10,078.07, 15,111.24 and 7,411.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078.07 : 15,111.24 = 7,411.25 : x
2. Step 2: Convert to fraction form
   10,078.07/15,111.24 = 7,411.25/x
3. Step 3: Cross multiply
   10,078.07x = 15,111.24 × 7,411.25
4. Step 4: Simplify right side
   10,078.07x = 111,993,177.45
5. Step 5: Solve for x
   x = 111,993,177.45/10,078.07
6. Step 6: Final answer
   x = 11,112.56