Finding the Fourth Proportional to 14,288.73, 19,718.23 and 7,915.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,288.73 : 19,718.23 = 7,915.30 : x
2. Step 2: Convert to fraction form
   14,288.73/19,718.23 = 7,915.30/x
3. Step 3: Cross multiply
   14,288.73x = 19,718.23 × 7,915.30
4. Step 4: Simplify right side
   14,288.73x = 156,075,721.98
5. Step 5: Solve for x
   x = 156,075,721.98/14,288.73
6. Step 6: Final answer
   x = 10,923.00