Finding the Fourth Proportional to 14,085.41, 19,435.50 and 8,422.47

Step by Step Solution

1. Step 1: Write the proportion equation
   14,085.41 : 19,435.50 = 8,422.47 : x
2. Step 2: Convert to fraction form
   14,085.41/19,435.50 = 8,422.47/x
3. Step 3: Cross multiply
   14,085.41x = 19,435.50 × 8,422.47
4. Step 4: Simplify right side
   14,085.41x = 163,694,915.69
5. Step 5: Solve for x
   x = 163,694,915.69/14,085.41
6. Step 6: Final answer
   x = 11,621.60