Finding the Fourth Proportional to 9,355.86, 12,911.31 and 5,323.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,355.86 : 12,911.31 = 5,323.34 : x
2. Step 2: Convert to fraction form
   9,355.86/12,911.31 = 5,323.34/x
3. Step 3: Cross multiply
   9,355.86x = 12,911.31 × 5,323.34
4. Step 4: Simplify right side
   9,355.86x = 68,731,292.98
5. Step 5: Solve for x
   x = 68,731,292.98/9,355.86
6. Step 6: Final answer
   x = 7,346.34