Finding the Fourth Proportional to 19,899.30, 27,461.71 and 10,947.18

Step by Step Solution

1. Step 1: Write the proportion equation
   19,899.30 : 27,461.71 = 10,947.18 : x
2. Step 2: Convert to fraction form
   19,899.30/27,461.71 = 10,947.18/x
3. Step 3: Cross multiply
   19,899.30x = 27,461.71 × 10,947.18
4. Step 4: Simplify right side
   19,899.30x = 300,628,282.48
5. Step 5: Solve for x
   x = 300,628,282.48/19,899.30
6. Step 6: Final answer
   x = 15,107.48