Finding the Fourth Proportional to 19,300.30, 28,955.91 and 9,947.14

Step by Step Solution

1. Step 1: Write the proportion equation
   19,300.30 : 28,955.91 = 9,947.14 : x
2. Step 2: Convert to fraction form
   19,300.30/28,955.91 = 9,947.14/x
3. Step 3: Cross multiply
   19,300.30x = 28,955.91 × 9,947.14
4. Step 4: Simplify right side
   19,300.30x = 288,028,490.60
5. Step 5: Solve for x
   x = 288,028,490.60/19,300.30
6. Step 6: Final answer
   x = 14,923.52