Finding the Fourth Proportional to 8,934.37, 13,404.80 and 3,091.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,934.37 : 13,404.80 = 3,091.57 : x
2. Step 2: Convert to fraction form
   8,934.37/13,404.80 = 3,091.57/x
3. Step 3: Cross multiply
   8,934.37x = 13,404.80 × 3,091.57
4. Step 4: Simplify right side
   8,934.37x = 41,441,877.54
5. Step 5: Solve for x
   x = 41,441,877.54/8,934.37
6. Step 6: Final answer
   x = 4,638.48