Finding the Fourth Proportional to 13,100.22, 18,078.15 and 8,630.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.22 : 18,078.15 = 8,630.46 : x
2. Step 2: Convert to fraction form
   13,100.22/18,078.15 = 8,630.46/x
3. Step 3: Cross multiply
   13,100.22x = 18,078.15 × 8,630.46
4. Step 4: Simplify right side
   13,100.22x = 156,022,750.45
5. Step 5: Solve for x
   x = 156,022,750.45/13,100.22
6. Step 6: Final answer
   x = 11,909.93