Finding the Fourth Proportional to 9,279.51, 12,805.89 and 5,087.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,279.51 : 12,805.89 = 5,087.49 : x
2. Step 2: Convert to fraction form
   9,279.51/12,805.89 = 5,087.49/x
3. Step 3: Cross multiply
   9,279.51x = 12,805.89 × 5,087.49
4. Step 4: Simplify right side
   9,279.51x = 65,149,837.32
5. Step 5: Solve for x
   x = 65,149,837.32/9,279.51
6. Step 6: Final answer
   x = 7,020.83