Finding the Fourth Proportional to 12,581.76, 18,873.27 and 4,791.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,581.76 : 18,873.27 = 4,791.18 : x
2. Step 2: Convert to fraction form
   12,581.76/18,873.27 = 4,791.18/x
3. Step 3: Cross multiply
   12,581.76x = 18,873.27 × 4,791.18
4. Step 4: Simplify right side
   12,581.76x = 90,425,233.76
5. Step 5: Solve for x
   x = 90,425,233.76/12,581.76
6. Step 6: Final answer
   x = 7,187.01