Finding the Fourth Proportional to 19,920.50, 27,492.12 and 10,969.82

Step by Step Solution

1. Step 1: Write the proportion equation
   19,920.50 : 27,492.12 = 10,969.82 : x
2. Step 2: Convert to fraction form
   19,920.50/27,492.12 = 10,969.82/x
3. Step 3: Cross multiply
   19,920.50x = 27,492.12 × 10,969.82
4. Step 4: Simplify right side
   19,920.50x = 301,583,607.82
5. Step 5: Solve for x
   x = 301,583,607.82/19,920.50
6. Step 6: Final answer
   x = 15,139.36