Finding the Fourth Proportional to 23,041.82, 31,787.79 and 13,213.83

Step by Step Solution

1. Step 1: Write the proportion equation
   23,041.82 : 31,787.79 = 13,213.83 : x
2. Step 2: Convert to fraction form
   23,041.82/31,787.79 = 13,213.83/x
3. Step 3: Cross multiply
   23,041.82x = 31,787.79 × 13,213.83
4. Step 4: Simplify right side
   23,041.82x = 420,038,597.12
5. Step 5: Solve for x
   x = 420,038,597.12/23,041.82
6. Step 6: Final answer
   x = 18,229.40