Finding the Fourth Proportional to 12,518.01, 18,773.82 and 5,121.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,518.01 : 18,773.82 = 5,121.09 : x
2. Step 2: Convert to fraction form
   12,518.01/18,773.82 = 5,121.09/x
3. Step 3: Cross multiply
   12,518.01x = 18,773.82 × 5,121.09
4. Step 4: Simplify right side
   12,518.01x = 96,142,421.86
5. Step 5: Solve for x
   x = 96,142,421.86/12,518.01
6. Step 6: Final answer
   x = 7,680.33