Finding the Fourth Proportional to 19,919.31, 27,488.58 and 10,966.83

Step by Step Solution

1. Step 1: Write the proportion equation
   19,919.31 : 27,488.58 = 10,966.83 : x
2. Step 2: Convert to fraction form
   19,919.31/27,488.58 = 10,966.83/x
3. Step 3: Cross multiply
   19,919.31x = 27,488.58 × 10,966.83
4. Step 4: Simplify right side
   19,919.31x = 301,462,583.80
5. Step 5: Solve for x
   x = 301,462,583.80/19,919.31
6. Step 6: Final answer
   x = 15,134.19