Finding the Fourth Proportional to 9,210.91, 12,711.05 and 5,019.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,210.91 : 12,711.05 = 5,019.16 : x
2. Step 2: Convert to fraction form
   9,210.91/12,711.05 = 5,019.16/x
3. Step 3: Cross multiply
   9,210.91x = 12,711.05 × 5,019.16
4. Step 4: Simplify right side
   9,210.91x = 63,798,793.72
5. Step 5: Solve for x
   x = 63,798,793.72/9,210.91
6. Step 6: Final answer
   x = 6,926.44