Finding the Fourth Proportional to 12,089.57, 18,123.42 and 4,296.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,089.57 : 18,123.42 = 4,296.56 : x
2. Step 2: Convert to fraction form
   12,089.57/18,123.42 = 4,296.56/x
3. Step 3: Cross multiply
   12,089.57x = 18,123.42 × 4,296.56
4. Step 4: Simplify right side
   12,089.57x = 77,868,270.82
5. Step 5: Solve for x
   x = 77,868,270.82/12,089.57
6. Step 6: Final answer
   x = 6,440.95