Finding the Fourth Proportional to 12,288.52, 18,429.18 and 4,890.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,288.52 : 18,429.18 = 4,890.52 : x
2. Step 2: Convert to fraction form
   12,288.52/18,429.18 = 4,890.52/x
3. Step 3: Cross multiply
   12,288.52x = 18,429.18 × 4,890.52
4. Step 4: Simplify right side
   12,288.52x = 90,128,273.37
5. Step 5: Solve for x
   x = 90,128,273.37/12,288.52
6. Step 6: Final answer
   x = 7,334.35