Finding the Fourth Proportional to 9,323.55, 12,865.68 and 5,290.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,323.55 : 12,865.68 = 5,290.34 : x
2. Step 2: Convert to fraction form
   9,323.55/12,865.68 = 5,290.34/x
3. Step 3: Cross multiply
   9,323.55x = 12,865.68 × 5,290.34
4. Step 4: Simplify right side
   9,323.55x = 68,063,757.20
5. Step 5: Solve for x
   x = 68,063,757.20/9,323.55
6. Step 6: Final answer
   x = 7,300.20