Finding the Fourth Proportional to 9,210.68, 12,710.76 and 5,019.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,210.68 : 12,710.76 = 5,019.20 : x
2. Step 2: Convert to fraction form
   9,210.68/12,710.76 = 5,019.20/x
3. Step 3: Cross multiply
   9,210.68x = 12,710.76 × 5,019.20
4. Step 4: Simplify right side
   9,210.68x = 63,797,846.59
5. Step 5: Solve for x
   x = 63,797,846.59/9,210.68
6. Step 6: Final answer
   x = 6,926.51