Finding the Fourth Proportional to 19,943.33, 27,521.98 and 10,991.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,943.33 : 27,521.98 = 10,991.15 : x
2. Step 2: Convert to fraction form
   19,943.33/27,521.98 = 10,991.15/x
3. Step 3: Cross multiply
   19,943.33x = 27,521.98 × 10,991.15
4. Step 4: Simplify right side
   19,943.33x = 302,498,210.48
5. Step 5: Solve for x
   x = 302,498,210.48/19,943.33
6. Step 6: Final answer
   x = 15,167.89