Finding the Fourth Proportional to 13,505.06, 18,628.72 and 8,967.95

Step by Step Solution

1. Step 1: Write the proportion equation
   13,505.06 : 18,628.72 = 8,967.95 : x
2. Step 2: Convert to fraction form
   13,505.06/18,628.72 = 8,967.95/x
3. Step 3: Cross multiply
   13,505.06x = 18,628.72 × 8,967.95
4. Step 4: Simplify right side
   13,505.06x = 167,061,383.82
5. Step 5: Solve for x
   x = 167,061,383.82/13,505.06
6. Step 6: Final answer
   x = 12,370.28