Finding the Fourth Proportional to 6,528.35, 9,792.72 and 2,145.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,528.35 : 9,792.72 = 2,145.30 : x
2. Step 2: Convert to fraction form
   6,528.35/9,792.72 = 2,145.30/x
3. Step 3: Cross multiply
   6,528.35x = 9,792.72 × 2,145.30
4. Step 4: Simplify right side
   6,528.35x = 21,008,322.22
5. Step 5: Solve for x
   x = 21,008,322.22/6,528.35
6. Step 6: Final answer
   x = 3,218.02