Finding the Fourth Proportional to 9,618.40, 13,274.06 and 5,370.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,618.40 : 13,274.06 = 5,370.30 : x
2. Step 2: Convert to fraction form
   9,618.40/13,274.06 = 5,370.30/x
3. Step 3: Cross multiply
   9,618.40x = 13,274.06 × 5,370.30
4. Step 4: Simplify right side
   9,618.40x = 71,285,684.42
5. Step 5: Solve for x
   x = 71,285,684.42/9,618.40
6. Step 6: Final answer
   x = 7,411.39