Finding the Fourth Proportional to 9,411.06, 12,986.82 and 5,219.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,411.06 : 12,986.82 = 5,219.22 : x
2. Step 2: Convert to fraction form
   9,411.06/12,986.82 = 5,219.22/x
3. Step 3: Cross multiply
   9,411.06x = 12,986.82 × 5,219.22
4. Step 4: Simplify right side
   9,411.06x = 67,781,070.68
5. Step 5: Solve for x
   x = 67,781,070.68/9,411.06
6. Step 6: Final answer
   x = 7,202.28