Finding the Fourth Proportional to 8,591.86, 12,909.39 and 5,473.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,591.86 : 12,909.39 = 5,473.27 : x
2. Step 2: Convert to fraction form
   8,591.86/12,909.39 = 5,473.27/x
3. Step 3: Cross multiply
   8,591.86x = 12,909.39 × 5,473.27
4. Step 4: Simplify right side
   8,591.86x = 70,656,577.01
5. Step 5: Solve for x
   x = 70,656,577.01/8,591.86
6. Step 6: Final answer
   x = 8,223.66