Finding the Fourth Proportional to 8,801.40, 12,144.78 and 5,263.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,801.40 : 12,144.78 = 5,263.32 : x
2. Step 2: Convert to fraction form
   8,801.40/12,144.78 = 5,263.32/x
3. Step 3: Cross multiply
   8,801.40x = 12,144.78 × 5,263.32
4. Step 4: Simplify right side
   8,801.40x = 63,921,863.47
5. Step 5: Solve for x
   x = 63,921,863.47/8,801.40
6. Step 6: Final answer
   x = 7,262.69