Finding the Fourth Proportional to 51,280.67, 76,914.78 and 13,837.88

Step by Step Solution

1. Step 1: Write the proportion equation
   51,280.67 : 76,914.78 = 13,837.88 : x
2. Step 2: Convert to fraction form
   51,280.67/76,914.78 = 13,837.88/x
3. Step 3: Cross multiply
   51,280.67x = 76,914.78 × 13,837.88
4. Step 4: Simplify right side
   51,280.67x = 1,064,337,111.29
5. Step 5: Solve for x
   x = 1,064,337,111.29/51,280.67
6. Step 6: Final answer
   x = 20,755.13