Finding the Fourth Proportional to 10,883.29, 15,002.88 and 8,490.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,883.29 : 15,002.88 = 8,490.57 : x
2. Step 2: Convert to fraction form
   10,883.29/15,002.88 = 8,490.57/x
3. Step 3: Cross multiply
   10,883.29x = 15,002.88 × 8,490.57
4. Step 4: Simplify right side
   10,883.29x = 127,383,002.84
5. Step 5: Solve for x
   x = 127,383,002.84/10,883.29
6. Step 6: Final answer
   x = 11,704.46