Finding the Fourth Proportional to 9,438.21, 13,023.69 and 5,661.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,438.21 : 13,023.69 = 5,661.54 : x
2. Step 2: Convert to fraction form
   9,438.21/13,023.69 = 5,661.54/x
3. Step 3: Cross multiply
   9,438.21x = 13,023.69 × 5,661.54
4. Step 4: Simplify right side
   9,438.21x = 73,734,141.88
5. Step 5: Solve for x
   x = 73,734,141.88/9,438.21
6. Step 6: Final answer
   x = 7,812.30