Finding the Fourth Proportional to 9,420.33, 12,996.81 and 5,384.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,420.33 : 12,996.81 = 5,384.25 : x
2. Step 2: Convert to fraction form
   9,420.33/12,996.81 = 5,384.25/x
3. Step 3: Cross multiply
   9,420.33x = 12,996.81 × 5,384.25
4. Step 4: Simplify right side
   9,420.33x = 69,978,074.24
5. Step 5: Solve for x
   x = 69,978,074.24/9,420.33
6. Step 6: Final answer
   x = 7,428.41