Finding the Fourth Proportional to 8,893.31, 12,278.72 and 5,537.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,893.31 : 12,278.72 = 5,537.48 : x
2. Step 2: Convert to fraction form
   8,893.31/12,278.72 = 5,537.48/x
3. Step 3: Cross multiply
   8,893.31x = 12,278.72 × 5,537.48
4. Step 4: Simplify right side
   8,893.31x = 67,993,118.88
5. Step 5: Solve for x
   x = 67,993,118.88/8,893.31
6. Step 6: Final answer
   x = 7,645.43