Finding the Fourth Proportional to 9,521.50, 13,139.94 and 5,330.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.50 : 13,139.94 = 5,330.02 : x
2. Step 2: Convert to fraction form
   9,521.50/13,139.94 = 5,330.02/x
3. Step 3: Cross multiply
   9,521.50x = 13,139.94 × 5,330.02
4. Step 4: Simplify right side
   9,521.50x = 70,036,143.00
5. Step 5: Solve for x
   x = 70,036,143.00/9,521.50
6. Step 6: Final answer
   x = 7,355.58