Finding the Fourth Proportional to 9,361.98, 12,916.13 and 7,209.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,361.98 : 12,916.13 = 7,209.18 : x
2. Step 2: Convert to fraction form
   9,361.98/12,916.13 = 7,209.18/x
3. Step 3: Cross multiply
   9,361.98x = 12,916.13 × 7,209.18
4. Step 4: Simplify right side
   9,361.98x = 93,114,670.03
5. Step 5: Solve for x
   x = 93,114,670.03/9,361.98
6. Step 6: Final answer
   x = 9,946.04