Finding the Fourth Proportional to 10,266.78, 14,168.12 and 5,551.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,266.78 : 14,168.12 = 5,551.07 : x
2. Step 2: Convert to fraction form
   10,266.78/14,168.12 = 5,551.07/x
3. Step 3: Cross multiply
   10,266.78x = 14,168.12 × 5,551.07
4. Step 4: Simplify right side
   10,266.78x = 78,648,127.29
5. Step 5: Solve for x
   x = 78,648,127.29/10,266.78
6. Step 6: Final answer
   x = 7,660.44