Finding the Fourth Proportional to 9,299.86, 12,828.16 and 5,520.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,299.86 : 12,828.16 = 5,520.54 : x
2. Step 2: Convert to fraction form
   9,299.86/12,828.16 = 5,520.54/x
3. Step 3: Cross multiply
   9,299.86x = 12,828.16 × 5,520.54
4. Step 4: Simplify right side
   9,299.86x = 70,818,370.41
5. Step 5: Solve for x
   x = 70,818,370.41/9,299.86
6. Step 6: Final answer
   x = 7,614.99