Finding the Fourth Proportional to 8,819.04, 12,168.72 and 5,635.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,819.04 : 12,168.72 = 5,635.20 : x
2. Step 2: Convert to fraction form
   8,819.04/12,168.72 = 5,635.20/x
3. Step 3: Cross multiply
   8,819.04x = 12,168.72 × 5,635.20
4. Step 4: Simplify right side
   8,819.04x = 68,573,170.94
5. Step 5: Solve for x
   x = 68,573,170.94/8,819.04
6. Step 6: Final answer
   x = 7,775.58