Finding the Fourth Proportional to 51,251.18, 76,870.41 and 13,814.18

Step by Step Solution

1. Step 1: Write the proportion equation
   51,251.18 : 76,870.41 = 13,814.18 : x
2. Step 2: Convert to fraction form
   51,251.18/76,870.41 = 13,814.18/x
3. Step 3: Cross multiply
   51,251.18x = 76,870.41 × 13,814.18
4. Step 4: Simplify right side
   51,251.18x = 1,061,901,680.41
5. Step 5: Solve for x
   x = 1,061,901,680.41/51,251.18
6. Step 6: Final answer
   x = 20,719.56