Finding the Fourth Proportional to 13,540, 18,686.82 and 7,951

Step by Step Solution

1. Step 1: Write the proportion equation
   13,540 : 18,686.82 = 7,951 : x
2. Step 2: Convert to fraction form
   13,540/18,686.82 = 7,951/x
3. Step 3: Cross multiply
   13,540x = 18,686.82 × 7,951
4. Step 4: Simplify right side
   13,540x = 148,578,905.82
5. Step 5: Solve for x
   x = 148,578,905.82/13,540
6. Step 6: Final answer
   x = 10,973.33