Finding the Fourth Proportional to 16,760.72, 23,130.60 and 9,308.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,760.72 : 23,130.60 = 9,308.72 : x
2. Step 2: Convert to fraction form
   16,760.72/23,130.60 = 9,308.72/x
3. Step 3: Cross multiply
   16,760.72x = 23,130.60 × 9,308.72
4. Step 4: Simplify right side
   16,760.72x = 215,316,278.83
5. Step 5: Solve for x
   x = 215,316,278.83/16,760.72
6. Step 6: Final answer
   x = 12,846.48