Finding the Fourth Proportional to 20,973.59, 31,471.32 and 8,502.83

Step by Step Solution

1. Step 1: Write the proportion equation
   20,973.59 : 31,471.32 = 8,502.83 : x
2. Step 2: Convert to fraction form
   20,973.59/31,471.32 = 8,502.83/x
3. Step 3: Cross multiply
   20,973.59x = 31,471.32 × 8,502.83
4. Step 4: Simplify right side
   20,973.59x = 267,595,241.32
5. Step 5: Solve for x
   x = 267,595,241.32/20,973.59
6. Step 6: Final answer
   x = 12,758.68