Finding the Fourth Proportional to 9,515.27, 13,129.80 and 5,533.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,515.27 : 13,129.80 = 5,533.31 : x
2. Step 2: Convert to fraction form
   9,515.27/13,129.80 = 5,533.31/x
3. Step 3: Cross multiply
   9,515.27x = 13,129.80 × 5,533.31
4. Step 4: Simplify right side
   9,515.27x = 72,651,265.71
5. Step 5: Solve for x
   x = 72,651,265.71/9,515.27
6. Step 6: Final answer
   x = 7,635.23