Finding the Fourth Proportional to 8,123.78, 11,205.52 and 5,737.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.78 : 11,205.52 = 5,737.22 : x
2. Step 2: Convert to fraction form
   8,123.78/11,205.52 = 5,737.22/x
3. Step 3: Cross multiply
   8,123.78x = 11,205.52 × 5,737.22
4. Step 4: Simplify right side
   8,123.78x = 64,288,533.45
5. Step 5: Solve for x
   x = 64,288,533.45/8,123.78
6. Step 6: Final answer
   x = 7,913.62