Finding the Fourth Proportional to 51,108.15, 76,656.83 and 13,672

Step by Step Solution

1. Step 1: Write the proportion equation
   51,108.15 : 76,656.83 = 13,672 : x
2. Step 2: Convert to fraction form
   51,108.15/76,656.83 = 13,672/x
3. Step 3: Cross multiply
   51,108.15x = 76,656.83 × 13,672
4. Step 4: Simplify right side
   51,108.15x = 1,048,052,179.76
5. Step 5: Solve for x
   x = 1,048,052,179.76/51,108.15
6. Step 6: Final answer
   x = 20,506.56