Finding the Fourth Proportional to 20,887.56, 31,293.59 and 13,850.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,887.56 : 31,293.59 = 13,850.82 : x
2. Step 2: Convert to fraction form
   20,887.56/31,293.59 = 13,850.82/x
3. Step 3: Cross multiply
   20,887.56x = 31,293.59 × 13,850.82
4. Step 4: Simplify right side
   20,887.56x = 433,441,812.99
5. Step 5: Solve for x
   x = 433,441,812.99/20,887.56
6. Step 6: Final answer
   x = 20,751.19