Finding the Fourth Proportional to 9,276.86, 12,802.66 and 5,085.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,276.86 : 12,802.66 = 5,085.12 : x
2. Step 2: Convert to fraction form
   9,276.86/12,802.66 = 5,085.12/x
3. Step 3: Cross multiply
   9,276.86x = 12,802.66 × 5,085.12
4. Step 4: Simplify right side
   9,276.86x = 65,103,062.42
5. Step 5: Solve for x
   x = 65,103,062.42/9,276.86
6. Step 6: Final answer
   x = 7,017.79