Finding the Fourth Proportional to 14,262.72, 19,680.81 and 7,888.87

Step by Step Solution

1. Step 1: Write the proportion equation
   14,262.72 : 19,680.81 = 7,888.87 : x
2. Step 2: Convert to fraction form
   14,262.72/19,680.81 = 7,888.87/x
3. Step 3: Cross multiply
   14,262.72x = 19,680.81 × 7,888.87
4. Step 4: Simplify right side
   14,262.72x = 155,259,351.58
5. Step 5: Solve for x
   x = 155,259,351.58/14,262.72
6. Step 6: Final answer
   x = 10,885.68