Finding the Fourth Proportional to 9,314.32, 12,855.72 and 5,909.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,314.32 : 12,855.72 = 5,909.12 : x
2. Step 2: Convert to fraction form
   9,314.32/12,855.72 = 5,909.12/x
3. Step 3: Cross multiply
   9,314.32x = 12,855.72 × 5,909.12
4. Step 4: Simplify right side
   9,314.32x = 75,965,992.17
5. Step 5: Solve for x
   x = 75,965,992.17/9,314.32
6. Step 6: Final answer
   x = 8,155.83