Finding the Fourth Proportional to 9,396.53, 12,969.55 and 5,420.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,396.53 : 12,969.55 = 5,420.04 : x
2. Step 2: Convert to fraction form
   9,396.53/12,969.55 = 5,420.04/x
3. Step 3: Cross multiply
   9,396.53x = 12,969.55 × 5,420.04
4. Step 4: Simplify right side
   9,396.53x = 70,295,479.78
5. Step 5: Solve for x
   x = 70,295,479.78/9,396.53
6. Step 6: Final answer
   x = 7,481.00