Finding the Fourth Proportional to 9,351.78, 14,022.72 and 2,777.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,351.78 : 14,022.72 = 2,777.10 : x
2. Step 2: Convert to fraction form
   9,351.78/14,022.72 = 2,777.10/x
3. Step 3: Cross multiply
   9,351.78x = 14,022.72 × 2,777.10
4. Step 4: Simplify right side
   9,351.78x = 38,942,495.71
5. Step 5: Solve for x
   x = 38,942,495.71/9,351.78
6. Step 6: Final answer
   x = 4,164.18