Finding the Fourth Proportional to 8,886.32, 12,262.82 and 5,528.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,886.32 : 12,262.82 = 5,528.40 : x
2. Step 2: Convert to fraction form
   8,886.32/12,262.82 = 5,528.40/x
3. Step 3: Cross multiply
   8,886.32x = 12,262.82 × 5,528.40
4. Step 4: Simplify right side
   8,886.32x = 67,793,774.09
5. Step 5: Solve for x
   x = 67,793,774.09/8,886.32
6. Step 6: Final answer
   x = 7,629.00