Finding the Fourth Proportional to 11,432.72, 17,148.88 and 3,112.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,432.72 : 17,148.88 = 3,112.60 : x
2. Step 2: Convert to fraction form
   11,432.72/17,148.88 = 3,112.60/x
3. Step 3: Cross multiply
   11,432.72x = 17,148.88 × 3,112.60
4. Step 4: Simplify right side
   11,432.72x = 53,377,603.89
5. Step 5: Solve for x
   x = 53,377,603.89/11,432.72
6. Step 6: Final answer
   x = 4,668.85