Finding the Fourth Proportional to 8,814.30, 12,160.38 and 5,627.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,814.30 : 12,160.38 = 5,627.72 : x
2. Step 2: Convert to fraction form
   8,814.30/12,160.38 = 5,627.72/x
3. Step 3: Cross multiply
   8,814.30x = 12,160.38 × 5,627.72
4. Step 4: Simplify right side
   8,814.30x = 68,435,213.73
5. Step 5: Solve for x
   x = 68,435,213.73/8,814.30
6. Step 6: Final answer
   x = 7,764.11