Finding the Fourth Proportional to 12,101.62, 18,139.47 and 4,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,101.62 : 18,139.47 = 4,196.56 : x
2. Step 2: Convert to fraction form
   12,101.62/18,139.47 = 4,196.56/x
3. Step 3: Cross multiply
   12,101.62x = 18,139.47 × 4,196.56
4. Step 4: Simplify right side
   12,101.62x = 76,123,374.22
5. Step 5: Solve for x
   x = 76,123,374.22/12,101.62
6. Step 6: Final answer
   x = 6,290.35