Finding the Fourth Proportional to 8,123.22, 12,175.52 and 4,417.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.22 : 12,175.52 = 4,417.20 : x
2. Step 2: Convert to fraction form
   8,123.22/12,175.52 = 4,417.20/x
3. Step 3: Cross multiply
   8,123.22x = 12,175.52 × 4,417.20
4. Step 4: Simplify right side
   8,123.22x = 53,781,684.86
5. Step 5: Solve for x
   x = 53,781,684.86/8,123.22
6. Step 6: Final answer
   x = 6,620.73