Finding the Fourth Proportional to 12,761, 17,610.38 and 7,018.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,761 : 17,610.38 = 7,018.70 : x
2. Step 2: Convert to fraction form
   12,761/17,610.38 = 7,018.70/x
3. Step 3: Cross multiply
   12,761x = 17,610.38 × 7,018.70
4. Step 4: Simplify right side
   12,761x = 123,601,974.11
5. Step 5: Solve for x
   x = 123,601,974.11/12,761
6. Step 6: Final answer
   x = 9,685.92