Finding the Fourth Proportional to 9,374.40, 12,935.61 and 5,396.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,374.40 : 12,935.61 = 5,396.09 : x
2. Step 2: Convert to fraction form
   9,374.40/12,935.61 = 5,396.09/x
3. Step 3: Cross multiply
   9,374.40x = 12,935.61 × 5,396.09
4. Step 4: Simplify right side
   9,374.40x = 69,801,651.09
5. Step 5: Solve for x
   x = 69,801,651.09/9,374.40
6. Step 6: Final answer
   x = 7,445.99