Finding the Fourth Proportional to 12,101.52, 18,152.76 and 5,171.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,101.52 : 18,152.76 = 5,171.28 : x
2. Step 2: Convert to fraction form
   12,101.52/18,152.76 = 5,171.28/x
3. Step 3: Cross multiply
   12,101.52x = 18,152.76 × 5,171.28
4. Step 4: Simplify right side
   12,101.52x = 93,873,004.73
5. Step 5: Solve for x
   x = 93,873,004.73/12,101.52
6. Step 6: Final answer
   x = 7,757.13