Finding the Fourth Proportional to 8,829.05, 12,182.72 and 5,645.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,829.05 : 12,182.72 = 5,645.18 : x
2. Step 2: Convert to fraction form
   8,829.05/12,182.72 = 5,645.18/x
3. Step 3: Cross multiply
   8,829.05x = 12,182.72 × 5,645.18
4. Step 4: Simplify right side
   8,829.05x = 68,773,612.75
5. Step 5: Solve for x
   x = 68,773,612.75/8,829.05
6. Step 6: Final answer
   x = 7,789.47