Finding the Fourth Proportional to 12,054.52, 18,089.34 and 5,128.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,054.52 : 18,089.34 = 5,128.48 : x
2. Step 2: Convert to fraction form
   12,054.52/18,089.34 = 5,128.48/x
3. Step 3: Cross multiply
   12,054.52x = 18,089.34 × 5,128.48
4. Step 4: Simplify right side
   12,054.52x = 92,770,818.40
5. Step 5: Solve for x
   x = 92,770,818.40/12,054.52
6. Step 6: Final answer
   x = 7,695.94