Finding the Fourth Proportional to 22,582, 31,162.20 and 12,510.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,582 : 31,162.20 = 12,510.40 : x
2. Step 2: Convert to fraction form
   22,582/31,162.20 = 12,510.40/x
3. Step 3: Cross multiply
   22,582x = 31,162.20 × 12,510.40
4. Step 4: Simplify right side
   22,582x = 389,851,586.88
5. Step 5: Solve for x
   x = 389,851,586.88/22,582
6. Step 6: Final answer
   x = 17,263.82