Finding the Fourth Proportional to 7,892.30, 10,857.84 and 7,673.60

Step by Step Solution

1. Step 1: Write the proportion equation
   7,892.30 : 10,857.84 = 7,673.60 : x
2. Step 2: Convert to fraction form
   7,892.30/10,857.84 = 7,673.60/x
3. Step 3: Cross multiply
   7,892.30x = 10,857.84 × 7,673.60
4. Step 4: Simplify right side
   7,892.30x = 83,318,721.02
5. Step 5: Solve for x
   x = 83,318,721.02/7,892.30
6. Step 6: Final answer
   x = 10,556.96