Finding the Fourth Proportional to 8,886.29, 12,262.74 and 4,907.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,886.29 : 12,262.74 = 4,907.31 : x
2. Step 2: Convert to fraction form
   8,886.29/12,262.74 = 4,907.31/x
3. Step 3: Cross multiply
   8,886.29x = 12,262.74 × 4,907.31
4. Step 4: Simplify right side
   8,886.29x = 60,177,066.63
5. Step 5: Solve for x
   x = 60,177,066.63/8,886.29
6. Step 6: Final answer
   x = 6,771.90