Finding the Fourth Proportional to 20,996.53, 31,484.94 and 7,845.37

Step by Step Solution

1. Step 1: Write the proportion equation
   20,996.53 : 31,484.94 = 7,845.37 : x
2. Step 2: Convert to fraction form
   20,996.53/31,484.94 = 7,845.37/x
3. Step 3: Cross multiply
   20,996.53x = 31,484.94 × 7,845.37
4. Step 4: Simplify right side
   20,996.53x = 247,011,003.73
5. Step 5: Solve for x
   x = 247,011,003.73/20,996.53
6. Step 6: Final answer
   x = 11,764.37