Finding the Fourth Proportional to 8,077.79, 12,111.72 and 3,141.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,077.79 : 12,111.72 = 3,141.68 : x
2. Step 2: Convert to fraction form
   8,077.79/12,111.72 = 3,141.68/x
3. Step 3: Cross multiply
   8,077.79x = 12,111.72 × 3,141.68
4. Step 4: Simplify right side
   8,077.79x = 38,051,087.93
5. Step 5: Solve for x
   x = 38,051,087.93/8,077.79
6. Step 6: Final answer
   x = 4,710.58