Finding the Fourth Proportional to 10,287.57, 15,432.59 and 3,622.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.57 : 15,432.59 = 3,622.69 : x
2. Step 2: Convert to fraction form
   10,287.57/15,432.59 = 3,622.69/x
3. Step 3: Cross multiply
   10,287.57x = 15,432.59 × 3,622.69
4. Step 4: Simplify right side
   10,287.57x = 55,907,489.47
5. Step 5: Solve for x
   x = 55,907,489.47/10,287.57
6. Step 6: Final answer
   x = 5,434.47