Finding the Fourth Proportional to 7,933.30, 10,953.30 and 7,091.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,933.30 : 10,953.30 = 7,091.31 : x
2. Step 2: Convert to fraction form
   7,933.30/10,953.30 = 7,091.31/x
3. Step 3: Cross multiply
   7,933.30x = 10,953.30 × 7,091.31
4. Step 4: Simplify right side
   7,933.30x = 77,673,245.82
5. Step 5: Solve for x
   x = 77,673,245.82/7,933.30
6. Step 6: Final answer
   x = 9,790.79