Finding the Fourth Proportional to 15,002.79, 20,704.71 and 9,036.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,002.79 : 20,704.71 = 9,036.38 : x
2. Step 2: Convert to fraction form
   15,002.79/20,704.71 = 9,036.38/x
3. Step 3: Cross multiply
   15,002.79x = 20,704.71 × 9,036.38
4. Step 4: Simplify right side
   15,002.79x = 187,095,523.83
5. Step 5: Solve for x
   x = 187,095,523.83/15,002.79
6. Step 6: Final answer
   x = 12,470.72