Finding the Fourth Proportional to 22,581, 31,161.72 and 12,509.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581 : 31,161.72 = 12,509.46 : x
2. Step 2: Convert to fraction form
   22,581/31,161.72 = 12,509.46/x
3. Step 3: Cross multiply
   22,581x = 31,161.72 × 12,509.46
4. Step 4: Simplify right side
   22,581x = 389,816,289.87
5. Step 5: Solve for x
   x = 389,816,289.87/22,581
6. Step 6: Final answer
   x = 17,263.02