Finding the Fourth Proportional to 9,489.68, 13,095.78 and 5,298.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,489.68 : 13,095.78 = 5,298.20 : x
2. Step 2: Convert to fraction form
   9,489.68/13,095.78 = 5,298.20/x
3. Step 3: Cross multiply
   9,489.68x = 13,095.78 × 5,298.20
4. Step 4: Simplify right side
   9,489.68x = 69,384,061.60
5. Step 5: Solve for x
   x = 69,384,061.60/9,489.68
6. Step 6: Final answer
   x = 7,311.53