Finding the Fourth Proportional to 14,242.71, 19,654.53 and 7,869.18

Step by Step Solution

1. Step 1: Write the proportion equation
   14,242.71 : 19,654.53 = 7,869.18 : x
2. Step 2: Convert to fraction form
   14,242.71/19,654.53 = 7,869.18/x
3. Step 3: Cross multiply
   14,242.71x = 19,654.53 × 7,869.18
4. Step 4: Simplify right side
   14,242.71x = 154,665,063.89
5. Step 5: Solve for x
   x = 154,665,063.89/14,242.71
6. Step 6: Final answer
   x = 10,859.24