Finding the Fourth Proportional to 9,340.12, 12,889.40 and 5,361.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,340.12 : 12,889.40 = 5,361.08 : x
2. Step 2: Convert to fraction form
   9,340.12/12,889.40 = 5,361.08/x
3. Step 3: Cross multiply
   9,340.12x = 12,889.40 × 5,361.08
4. Step 4: Simplify right side
   9,340.12x = 69,101,104.55
5. Step 5: Solve for x
   x = 69,101,104.55/9,340.12
6. Step 6: Final answer
   x = 7,398.31