Finding the Fourth Proportional to 9,087.35, 12,540.39 and 5,109.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,087.35 : 12,540.39 = 5,109.26 : x
2. Step 2: Convert to fraction form
   9,087.35/12,540.39 = 5,109.26/x
3. Step 3: Cross multiply
   9,087.35x = 12,540.39 × 5,109.26
4. Step 4: Simplify right side
   9,087.35x = 64,072,113.01
5. Step 5: Solve for x
   x = 64,072,113.01/9,087.35
6. Step 6: Final answer
   x = 7,050.69