Finding the Fourth Proportional to 9,521.48, 13,139.28 and 5,329.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.48 : 13,139.28 = 5,329.52 : x
2. Step 2: Convert to fraction form
   9,521.48/13,139.28 = 5,329.52/x
3. Step 3: Cross multiply
   9,521.48x = 13,139.28 × 5,329.52
4. Step 4: Simplify right side
   9,521.48x = 70,026,055.55
5. Step 5: Solve for x
   x = 70,026,055.55/9,521.48
6. Step 6: Final answer
   x = 7,354.53