Finding the Fourth Proportional to 51,300.18, 76,949.92 and 13,863.99

Step by Step Solution

1. Step 1: Write the proportion equation
   51,300.18 : 76,949.92 = 13,863.99 : x
2. Step 2: Convert to fraction form
   51,300.18/76,949.92 = 13,863.99/x
3. Step 3: Cross multiply
   51,300.18x = 76,949.92 × 13,863.99
4. Step 4: Simplify right side
   51,300.18x = 1,066,832,921.38
5. Step 5: Solve for x
   x = 1,066,832,921.38/51,300.18
6. Step 6: Final answer
   x = 20,795.89