Finding the Fourth Proportional to 9,334.46, 12,881.61 and 5,355.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,334.46 : 12,881.61 = 5,355.47 : x
2. Step 2: Convert to fraction form
   9,334.46/12,881.61 = 5,355.47/x
3. Step 3: Cross multiply
   9,334.46x = 12,881.61 × 5,355.47
4. Step 4: Simplify right side
   9,334.46x = 68,987,011.50
5. Step 5: Solve for x
   x = 68,987,011.50/9,334.46
6. Step 6: Final answer
   x = 7,390.58