Finding the Fourth Proportional to 8,309.51, 11,462.72 and 5,123.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309.51 : 11,462.72 = 5,123.49 : x
2. Step 2: Convert to fraction form
   8,309.51/11,462.72 = 5,123.49/x
3. Step 3: Cross multiply
   8,309.51x = 11,462.72 × 5,123.49
4. Step 4: Simplify right side
   8,309.51x = 58,729,131.29
5. Step 5: Solve for x
   x = 58,729,131.29/8,309.51
6. Step 6: Final answer
   x = 7,067.70