Finding the Fourth Proportional to 8,886.61, 12,262.90 and 4,907.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,886.61 : 12,262.90 = 4,907.69 : x
2. Step 2: Convert to fraction form
   8,886.61/12,262.90 = 4,907.69/x
3. Step 3: Cross multiply
   8,886.61x = 12,262.90 × 4,907.69
4. Step 4: Simplify right side
   8,886.61x = 60,182,425.85
5. Step 5: Solve for x
   x = 60,182,425.85/8,886.61
6. Step 6: Final answer
   x = 6,772.26