Finding the Fourth Proportional to 12,481.45, 17,200.71 and 8,938.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,481.45 : 17,200.71 = 8,938.51 : x
2. Step 2: Convert to fraction form
   12,481.45/17,200.71 = 8,938.51/x
3. Step 3: Cross multiply
   12,481.45x = 17,200.71 × 8,938.51
4. Step 4: Simplify right side
   12,481.45x = 153,748,675.34
5. Step 5: Solve for x
   x = 153,748,675.34/12,481.45
6. Step 6: Final answer
   x = 12,318.18