Finding the Fourth Proportional to 22,467.60, 31,005 and 12,395.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,467.60 : 31,005 = 12,395.79 : x
2. Step 2: Convert to fraction form
   22,467.60/31,005 = 12,395.79/x
3. Step 3: Cross multiply
   22,467.60x = 31,005 × 12,395.79
4. Step 4: Simplify right side
   22,467.60x = 384,331,468.95
5. Step 5: Solve for x
   x = 384,331,468.95/22,467.60
6. Step 6: Final answer
   x = 17,106.03