Finding the Fourth Proportional to 8,834.12, 12,191.23 and 5,057.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,834.12 : 12,191.23 = 5,057.27 : x
2. Step 2: Convert to fraction form
   8,834.12/12,191.23 = 5,057.27/x
3. Step 3: Cross multiply
   8,834.12x = 12,191.23 × 5,057.27
4. Step 4: Simplify right side
   8,834.12x = 61,654,384.86
5. Step 5: Solve for x
   x = 61,654,384.86/8,834.12
6. Step 6: Final answer
   x = 6,979.12