Finding the Fourth Proportional to 9,339.34, 12,890.18 and 5,363.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,339.34 : 12,890.18 = 5,363.18 : x
2. Step 2: Convert to fraction form
   9,339.34/12,890.18 = 5,363.18/x
3. Step 3: Cross multiply
   9,339.34x = 12,890.18 × 5,363.18
4. Step 4: Simplify right side
   9,339.34x = 69,132,355.57
5. Step 5: Solve for x
   x = 69,132,355.57/9,339.34
6. Step 6: Final answer
   x = 7,402.27