Finding the Fourth Proportional to 19,899.17, 27,461.30 and 10,947.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,899.17 : 27,461.30 = 10,947.15 : x
2. Step 2: Convert to fraction form
   19,899.17/27,461.30 = 10,947.15/x
3. Step 3: Cross multiply
   19,899.17x = 27,461.30 × 10,947.15
4. Step 4: Simplify right side
   19,899.17x = 300,622,915.56
5. Step 5: Solve for x
   x = 300,622,915.56/19,899.17
6. Step 6: Final answer
   x = 15,107.31