Finding the Fourth Proportional to 7,927.30, 10,945.02 and 7,085.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,927.30 : 10,945.02 = 7,085.31 : x
2. Step 2: Convert to fraction form
   7,927.30/10,945.02 = 7,085.31/x
3. Step 3: Cross multiply
   7,927.30x = 10,945.02 × 7,085.31
4. Step 4: Simplify right side
   7,927.30x = 77,548,804.93
5. Step 5: Solve for x
   x = 77,548,804.93/7,927.30
6. Step 6: Final answer
   x = 9,782.50