Finding the Fourth Proportional to 10,669.88, 14,730.54 and 7,144.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,669.88 : 14,730.54 = 7,144.76 : x
2. Step 2: Convert to fraction form
   10,669.88/14,730.54 = 7,144.76/x
3. Step 3: Cross multiply
   10,669.88x = 14,730.54 × 7,144.76
4. Step 4: Simplify right side
   10,669.88x = 105,246,172.97
5. Step 5: Solve for x
   x = 105,246,172.97/10,669.88
6. Step 6: Final answer
   x = 9,863.86