Finding the Fourth Proportional to 9,356.94, 12,909.86 and 5,770.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,356.94 : 12,909.86 = 5,770.68 : x
2. Step 2: Convert to fraction form
   9,356.94/12,909.86 = 5,770.68/x
3. Step 3: Cross multiply
   9,356.94x = 12,909.86 × 5,770.68
4. Step 4: Simplify right side
   9,356.94x = 74,498,670.90
5. Step 5: Solve for x
   x = 74,498,670.90/9,356.94
6. Step 6: Final answer
   x = 7,961.86