Finding the Fourth Proportional to 9,013.28, 13,521.56 and 3,170.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,013.28 : 13,521.56 = 3,170.48 : x
2. Step 2: Convert to fraction form
   9,013.28/13,521.56 = 3,170.48/x
3. Step 3: Cross multiply
   9,013.28x = 13,521.56 × 3,170.48
4. Step 4: Simplify right side
   9,013.28x = 42,869,835.55
5. Step 5: Solve for x
   x = 42,869,835.55/9,013.28
6. Step 6: Final answer
   x = 4,756.30