Finding the Fourth Proportional to 9,065.68, 12,510.66 and 5,086.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,065.68 : 12,510.66 = 5,086.79 : x
2. Step 2: Convert to fraction form
   9,065.68/12,510.66 = 5,086.79/x
3. Step 3: Cross multiply
   9,065.68x = 12,510.66 × 5,086.79
4. Step 4: Simplify right side
   9,065.68x = 63,639,100.18
5. Step 5: Solve for x
   x = 63,639,100.18/9,065.68
6. Step 6: Final answer
   x = 7,019.78