Finding the Fourth Proportional to 9,377.08, 12,940.35 and 5,396.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,377.08 : 12,940.35 = 5,396.74 : x
2. Step 2: Convert to fraction form
   9,377.08/12,940.35 = 5,396.74/x
3. Step 3: Cross multiply
   9,377.08x = 12,940.35 × 5,396.74
4. Step 4: Simplify right side
   9,377.08x = 69,835,704.46
5. Step 5: Solve for x
   x = 69,835,704.46/9,377.08
6. Step 6: Final answer
   x = 7,447.49