Finding the Fourth Proportional to 6,128.76, 9,189.48 and 2,432.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.76 : 9,189.48 = 2,432.72 : x
2. Step 2: Convert to fraction form
   6,128.76/9,189.48 = 2,432.72/x
3. Step 3: Cross multiply
   6,128.76x = 9,189.48 × 2,432.72
4. Step 4: Simplify right side
   6,128.76x = 22,355,431.79
5. Step 5: Solve for x
   x = 22,355,431.79/6,128.76
6. Step 6: Final answer
   x = 3,647.63