Finding the Fourth Proportional to 10,228.78, 14,111.72 and 5,751.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,228.78 : 14,111.72 = 5,751.50 : x
2. Step 2: Convert to fraction form
   10,228.78/14,111.72 = 5,751.50/x
3. Step 3: Cross multiply
   10,228.78x = 14,111.72 × 5,751.50
4. Step 4: Simplify right side
   10,228.78x = 81,163,557.58
5. Step 5: Solve for x
   x = 81,163,557.58/10,228.78
6. Step 6: Final answer
   x = 7,934.82