Finding the Fourth Proportional to 9,275.31, 12,801.86 and 8,528.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,275.31 : 12,801.86 = 8,528.08 : x
2. Step 2: Convert to fraction form
   9,275.31/12,801.86 = 8,528.08/x
3. Step 3: Cross multiply
   9,275.31x = 12,801.86 × 8,528.08
4. Step 4: Simplify right side
   9,275.31x = 109,175,286.25
5. Step 5: Solve for x
   x = 109,175,286.25/9,275.31
6. Step 6: Final answer
   x = 11,770.53