Finding the Fourth Proportional to 8,849.10, 12,209.10 and 5,311.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,849.10 : 12,209.10 = 5,311.02 : x
2. Step 2: Convert to fraction form
   8,849.10/12,209.10 = 5,311.02/x
3. Step 3: Cross multiply
   8,849.10x = 12,209.10 × 5,311.02
4. Step 4: Simplify right side
   8,849.10x = 64,842,774.28
5. Step 5: Solve for x
   x = 64,842,774.28/8,849.10
6. Step 6: Final answer
   x = 7,327.61