Finding the Fourth Proportional to 19,681.82, 27,160.89 and 10,729.34

Step by Step Solution

1. Step 1: Write the proportion equation
   19,681.82 : 27,160.89 = 10,729.34 : x
2. Step 2: Convert to fraction form
   19,681.82/27,160.89 = 10,729.34/x
3. Step 3: Cross multiply
   19,681.82x = 27,160.89 × 10,729.34
4. Step 4: Simplify right side
   19,681.82x = 291,418,423.51
5. Step 5: Solve for x
   x = 291,418,423.51/19,681.82
6. Step 6: Final answer
   x = 14,806.48