Finding the Fourth Proportional to 14,290.50, 19,720.89 and 8,002.88

Step by Step Solution

1. Step 1: Write the proportion equation
   14,290.50 : 19,720.89 = 8,002.88 : x
2. Step 2: Convert to fraction form
   14,290.50/19,720.89 = 8,002.88/x
3. Step 3: Cross multiply
   14,290.50x = 19,720.89 × 8,002.88
4. Step 4: Simplify right side
   14,290.50x = 157,823,858.56
5. Step 5: Solve for x
   x = 157,823,858.56/14,290.50
6. Step 6: Final answer
   x = 11,043.97