Finding the Fourth Proportional to 17,871.06, 24,662.54 and 9,912.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,871.06 : 24,662.54 = 9,912.80 : x
2. Step 2: Convert to fraction form
   17,871.06/24,662.54 = 9,912.80/x
3. Step 3: Cross multiply
   17,871.06x = 24,662.54 × 9,912.80
4. Step 4: Simplify right side
   17,871.06x = 244,474,826.51
5. Step 5: Solve for x
   x = 244,474,826.51/17,871.06
6. Step 6: Final answer
   x = 13,679.93