Finding the Fourth Proportional to 8,391.34, 12,593.04 and 5,623.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,391.34 : 12,593.04 = 5,623.30 : x
2. Step 2: Convert to fraction form
   8,391.34/12,593.04 = 5,623.30/x
3. Step 3: Cross multiply
   8,391.34x = 12,593.04 × 5,623.30
4. Step 4: Simplify right side
   8,391.34x = 70,814,441.83
5. Step 5: Solve for x
   x = 70,814,441.83/8,391.34
6. Step 6: Final answer
   x = 8,438.99