Finding the Fourth Proportional to 8,410.64, 11,592.72 and 7,704.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,410.64 : 11,592.72 = 7,704.72 : x
2. Step 2: Convert to fraction form
   8,410.64/11,592.72 = 7,704.72/x
3. Step 3: Cross multiply
   8,410.64x = 11,592.72 × 7,704.72
4. Step 4: Simplify right side
   8,410.64x = 89,318,661.64
5. Step 5: Solve for x
   x = 89,318,661.64/8,410.64
6. Step 6: Final answer
   x = 10,619.73