Finding the Fourth Proportional to 12,123, 18,189.16 and 4,732.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123 : 18,189.16 = 4,732.70 : x
2. Step 2: Convert to fraction form
   12,123/18,189.16 = 4,732.70/x
3. Step 3: Cross multiply
   12,123x = 18,189.16 × 4,732.70
4. Step 4: Simplify right side
   12,123x = 86,083,837.53
5. Step 5: Solve for x
   x = 86,083,837.53/12,123
6. Step 6: Final answer
   x = 7,100.87