Finding the Fourth Proportional to 22,487.78, 31,035.87 and 13,056.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,487.78 : 31,035.87 = 13,056.34 : x
2. Step 2: Convert to fraction form
   22,487.78/31,035.87 = 13,056.34/x
3. Step 3: Cross multiply
   22,487.78x = 31,035.87 × 13,056.34
4. Step 4: Simplify right side
   22,487.78x = 405,214,870.92
5. Step 5: Solve for x
   x = 405,214,870.92/22,487.78
6. Step 6: Final answer
   x = 18,019.34