Finding the Fourth Proportional to 20,876.19, 31,314.42 and 5,293.83

Step by Step Solution

1. Step 1: Write the proportion equation
   20,876.19 : 31,314.42 = 5,293.83 : x
2. Step 2: Convert to fraction form
   20,876.19/31,314.42 = 5,293.83/x
3. Step 3: Cross multiply
   20,876.19x = 31,314.42 × 5,293.83
4. Step 4: Simplify right side
   20,876.19x = 165,773,216.03
5. Step 5: Solve for x
   x = 165,773,216.03/20,876.19
6. Step 6: Final answer
   x = 7,940.78