Finding the Fourth Proportional to 17,730.60, 24,440.42 and 12,131.88

Step by Step Solution

1. Step 1: Write the proportion equation
   17,730.60 : 24,440.42 = 12,131.88 : x
2. Step 2: Convert to fraction form
   17,730.60/24,440.42 = 12,131.88/x
3. Step 3: Cross multiply
   17,730.60x = 24,440.42 × 12,131.88
4. Step 4: Simplify right side
   17,730.60x = 296,508,242.59
5. Step 5: Solve for x
   x = 296,508,242.59/17,730.60
6. Step 6: Final answer
   x = 16,722.97