Finding the Fourth Proportional to 8,886.30, 12,262.86 and 5,696.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,886.30 : 12,262.86 = 5,696.31 : x
2. Step 2: Convert to fraction form
   8,886.30/12,262.86 = 5,696.31/x
3. Step 3: Cross multiply
   8,886.30x = 12,262.86 × 5,696.31
4. Step 4: Simplify right side
   8,886.30x = 69,853,052.05
5. Step 5: Solve for x
   x = 69,853,052.05/8,886.30
6. Step 6: Final answer
   x = 7,860.76