Finding the Fourth Proportional to 14,479.50, 19,981.71 and 7,855.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,479.50 : 19,981.71 = 7,855.50 : x
2. Step 2: Convert to fraction form
   14,479.50/19,981.71 = 7,855.50/x
3. Step 3: Cross multiply
   14,479.50x = 19,981.71 × 7,855.50
4. Step 4: Simplify right side
   14,479.50x = 156,966,322.91
5. Step 5: Solve for x
   x = 156,966,322.91/14,479.50
6. Step 6: Final answer
   x = 10,840.59