Finding the Fourth Proportional to 17,558.09, 24,215.73 and 12,520.70

Step by Step Solution

1. Step 1: Write the proportion equation
   17,558.09 : 24,215.73 = 12,520.70 : x
2. Step 2: Convert to fraction form
   17,558.09/24,215.73 = 12,520.70/x
3. Step 3: Cross multiply
   17,558.09x = 24,215.73 × 12,520.70
4. Step 4: Simplify right side
   17,558.09x = 303,197,890.61
5. Step 5: Solve for x
   x = 303,197,890.61/17,558.09
6. Step 6: Final answer
   x = 17,268.27