Finding the Fourth Proportional to 23,118.16, 31,903.57 and 12,769.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,118.16 : 31,903.57 = 12,769.88 : x
2. Step 2: Convert to fraction form
   23,118.16/31,903.57 = 12,769.88/x
3. Step 3: Cross multiply
   23,118.16x = 31,903.57 × 12,769.88
4. Step 4: Simplify right side
   23,118.16x = 407,404,760.47
5. Step 5: Solve for x
   x = 407,404,760.47/23,118.16
6. Step 6: Final answer
   x = 17,622.72