Finding the Fourth Proportional to 22,520.63, 31,075.77 and 12,447.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,520.63 : 31,075.77 = 12,447.71 : x
2. Step 2: Convert to fraction form
   22,520.63/31,075.77 = 12,447.71/x
3. Step 3: Cross multiply
   22,520.63x = 31,075.77 × 12,447.71
4. Step 4: Simplify right side
   22,520.63x = 386,822,017.61
5. Step 5: Solve for x
   x = 386,822,017.61/22,520.63
6. Step 6: Final answer
   x = 17,176.34