Finding the Fourth Proportional to 8,820, 12,171.18 and 5,282.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,820 : 12,171.18 = 5,282.52 : x
2. Step 2: Convert to fraction form
   8,820/12,171.18 = 5,282.52/x
3. Step 3: Cross multiply
   8,820x = 12,171.18 × 5,282.52
4. Step 4: Simplify right side
   8,820x = 64,294,501.77
5. Step 5: Solve for x
   x = 64,294,501.77/8,820
6. Step 6: Final answer
   x = 7,289.63