Finding the Fourth Proportional to 9,419.68, 12,999.06 and 5,227.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,419.68 : 12,999.06 = 5,227.96 : x
2. Step 2: Convert to fraction form
   9,419.68/12,999.06 = 5,227.96/x
3. Step 3: Cross multiply
   9,419.68x = 12,999.06 × 5,227.96
4. Step 4: Simplify right side
   9,419.68x = 67,958,565.72
5. Step 5: Solve for x
   x = 67,958,565.72/9,419.68
6. Step 6: Final answer
   x = 7,214.53