Finding the Fourth Proportional to 7,238.45, 9,984.50 and 5,557.29

Step by Step Solution

1. Step 1: Write the proportion equation
   7,238.45 : 9,984.50 = 5,557.29 : x
2. Step 2: Convert to fraction form
   7,238.45/9,984.50 = 5,557.29/x
3. Step 3: Cross multiply
   7,238.45x = 9,984.50 × 5,557.29
4. Step 4: Simplify right side
   7,238.45x = 55,486,762.01
5. Step 5: Solve for x
   x = 55,486,762.01/7,238.45
6. Step 6: Final answer
   x = 7,665.56