Finding the Fourth Proportional to 8,040.51, 12,079.31 and 7,708.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,040.51 : 12,079.31 = 7,708.37 : x
2. Step 2: Convert to fraction form
   8,040.51/12,079.31 = 7,708.37/x
3. Step 3: Cross multiply
   8,040.51x = 12,079.31 × 7,708.37
4. Step 4: Simplify right side
   8,040.51x = 93,111,691.89
5. Step 5: Solve for x
   x = 93,111,691.89/8,040.51
6. Step 6: Final answer
   x = 11,580.32