Finding the Fourth Proportional to 12,053.72, 18,076.88 and 4,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,053.72 : 18,076.88 = 4,260.72 : x
2. Step 2: Convert to fraction form
   12,053.72/18,076.88 = 4,260.72/x
3. Step 3: Cross multiply
   12,053.72x = 18,076.88 × 4,260.72
4. Step 4: Simplify right side
   12,053.72x = 77,020,524.15
5. Step 5: Solve for x
   x = 77,020,524.15/12,053.72
6. Step 6: Final answer
   x = 6,389.77