Finding the Fourth Proportional to 9,414.81, 12,981.81 and 7,707.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,414.81 : 12,981.81 = 7,707.99 : x
2. Step 2: Convert to fraction form
   9,414.81/12,981.81 = 7,707.99/x
3. Step 3: Cross multiply
   9,414.81x = 12,981.81 × 7,707.99
4. Step 4: Simplify right side
   9,414.81x = 100,063,661.66
5. Step 5: Solve for x
   x = 100,063,661.66/9,414.81
6. Step 6: Final answer
   x = 10,628.33