Finding the Fourth Proportional to 9,540.05, 13,164.75 and 5,290.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,540.05 : 13,164.75 = 5,290.59 : x
2. Step 2: Convert to fraction form
   9,540.05/13,164.75 = 5,290.59/x
3. Step 3: Cross multiply
   9,540.05x = 13,164.75 × 5,290.59
4. Step 4: Simplify right side
   9,540.05x = 69,649,294.70
5. Step 5: Solve for x
   x = 69,649,294.70/9,540.05
6. Step 6: Final answer
   x = 7,300.72