Finding the Fourth Proportional to 10,718.51, 16,086.15 and 7,019.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,718.51 : 16,086.15 = 7,019.78 : x
2. Step 2: Convert to fraction form
   10,718.51/16,086.15 = 7,019.78/x
3. Step 3: Cross multiply
   10,718.51x = 16,086.15 × 7,019.78
4. Step 4: Simplify right side
   10,718.51x = 112,921,153.62
5. Step 5: Solve for x
   x = 112,921,153.62/10,718.51
6. Step 6: Final answer
   x = 10,535.16