Finding the Fourth Proportional to 15,443.50, 21,312.06 and 8,369.92

Step by Step Solution

1. Step 1: Write the proportion equation
   15,443.50 : 21,312.06 = 8,369.92 : x
2. Step 2: Convert to fraction form
   15,443.50/21,312.06 = 8,369.92/x
3. Step 3: Cross multiply
   15,443.50x = 21,312.06 × 8,369.92
4. Step 4: Simplify right side
   15,443.50x = 178,380,130.67
5. Step 5: Solve for x
   x = 178,380,130.67/15,443.50
6. Step 6: Final answer
   x = 11,550.50