Finding the Fourth Proportional to 8,877.56, 12,253.90 and 5,731.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,877.56 : 12,253.90 = 5,731.32 : x
2. Step 2: Convert to fraction form
   8,877.56/12,253.90 = 5,731.32/x
3. Step 3: Cross multiply
   8,877.56x = 12,253.90 × 5,731.32
4. Step 4: Simplify right side
   8,877.56x = 70,231,022.15
5. Step 5: Solve for x
   x = 70,231,022.15/8,877.56
6. Step 6: Final answer
   x = 7,911.07