Finding the Fourth Proportional to 12,505.23, 18,760.68 and 4,185.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,505.23 : 18,760.68 = 4,185.72 : x
2. Step 2: Convert to fraction form
   12,505.23/18,760.68 = 4,185.72/x
3. Step 3: Cross multiply
   12,505.23x = 18,760.68 × 4,185.72
4. Step 4: Simplify right side
   12,505.23x = 78,526,953.49
5. Step 5: Solve for x
   x = 78,526,953.49/12,505.23
6. Step 6: Final answer
   x = 6,279.53