Finding the Fourth Proportional to 12,123.98, 18,187.78 and 3,804.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123.98 : 18,187.78 = 3,804.74 : x
2. Step 2: Convert to fraction form
   12,123.98/18,187.78 = 3,804.74/x
3. Step 3: Cross multiply
   12,123.98x = 18,187.78 × 3,804.74
4. Step 4: Simplify right side
   12,123.98x = 69,199,774.08
5. Step 5: Solve for x
   x = 69,199,774.08/12,123.98
6. Step 6: Final answer
   x = 5,707.68