Finding the Fourth Proportional to 14,002.50, 19,323.45 and 7,715.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,002.50 : 19,323.45 = 7,715.28 : x
2. Step 2: Convert to fraction form
   14,002.50/19,323.45 = 7,715.28/x
3. Step 3: Cross multiply
   14,002.50x = 19,323.45 × 7,715.28
4. Step 4: Simplify right side
   14,002.50x = 149,085,827.32
5. Step 5: Solve for x
   x = 149,085,827.32/14,002.50
6. Step 6: Final answer
   x = 10,647.09