Finding the Fourth Proportional to 19,840.82, 27,381.56 and 13,114.78

Step by Step Solution

1. Step 1: Write the proportion equation
   19,840.82 : 27,381.56 = 13,114.78 : x
2. Step 2: Convert to fraction form
   19,840.82/27,381.56 = 13,114.78/x
3. Step 3: Cross multiply
   19,840.82x = 27,381.56 × 13,114.78
4. Step 4: Simplify right side
   19,840.82x = 359,103,001.43
5. Step 5: Solve for x
   x = 359,103,001.43/19,840.82
6. Step 6: Final answer
   x = 18,099.21