Finding the Fourth Proportional to 12,689, 19,041.18 and 5,293.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,689 : 19,041.18 = 5,293.16 : x
2. Step 2: Convert to fraction form
   12,689/19,041.18 = 5,293.16/x
3. Step 3: Cross multiply
   12,689x = 19,041.18 × 5,293.16
4. Step 4: Simplify right side
   12,689x = 100,788,012.33
5. Step 5: Solve for x
   x = 100,788,012.33/12,689
6. Step 6: Final answer
   x = 7,942.94