Finding the Fourth Proportional to 8,907.88, 12,292.71 and 4,928.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,907.88 : 12,292.71 = 4,928.91 : x
2. Step 2: Convert to fraction form
   8,907.88/12,292.71 = 4,928.91/x
3. Step 3: Cross multiply
   8,907.88x = 12,292.71 × 4,928.91
4. Step 4: Simplify right side
   8,907.88x = 60,589,661.25
5. Step 5: Solve for x
   x = 60,589,661.25/8,907.88
6. Step 6: Final answer
   x = 6,801.80