Finding the Fourth Proportional to 19,890.27, 27,448.67 and 10,938.34

Step by Step Solution

1. Step 1: Write the proportion equation
   19,890.27 : 27,448.67 = 10,938.34 : x
2. Step 2: Convert to fraction form
   19,890.27/27,448.67 = 10,938.34/x
3. Step 3: Cross multiply
   19,890.27x = 27,448.67 × 10,938.34
4. Step 4: Simplify right side
   19,890.27x = 300,242,885.01
5. Step 5: Solve for x
   x = 300,242,885.01/19,890.27
6. Step 6: Final answer
   x = 15,094.96