Finding the Fourth Proportional to 9,411.80, 12,977.69 and 7,704.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,411.80 : 12,977.69 = 7,704.99 : x
2. Step 2: Convert to fraction form
   9,411.80/12,977.69 = 7,704.99/x
3. Step 3: Cross multiply
   9,411.80x = 12,977.69 × 7,704.99
4. Step 4: Simplify right side
   9,411.80x = 99,992,933.15
5. Step 5: Solve for x
   x = 99,992,933.15/9,411.80
6. Step 6: Final answer
   x = 10,624.21