Finding the Fourth Proportional to 12,374.72, 17,067.48 and 7,661.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,374.72 : 17,067.48 = 7,661.60 : x
2. Step 2: Convert to fraction form
   12,374.72/17,067.48 = 7,661.60/x
3. Step 3: Cross multiply
   12,374.72x = 17,067.48 × 7,661.60
4. Step 4: Simplify right side
   12,374.72x = 130,764,204.77
5. Step 5: Solve for x
   x = 130,764,204.77/12,374.72
6. Step 6: Final answer
   x = 10,567.04